EBSB


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:StatementEquityComponents

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpense

us-gaap:InterestExpenseLongTermDebt

us-gaap:InterestIncomeExpenseNet

us-gaap:MarketingAndAdvertisingExpense

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss

us-gaap:Assets
us-gaap:ConsolidatedEntities

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:Cash
us-gaap:ConsolidatedEntities, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:Goodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:LongTermDebt

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

ebsb:AmortizationOfCoreDepositIntangible

ebsb:AmortizationReversalOfESOPAward
us-gaap:StatementEquityComponents

ebsb:CustomerServiceFees
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
ebsb:FederalReserveBankBorrowing

ebsb:IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest

ebsb:IncreaseDecreaseAmortizationOfAcquisitionCosts

ebsb:InterestPaidBorrowings

ebsb:InterestPaidDeposits

ebsb:LoanFeesNet

ebsb:LoansUnderModificationAmount

ebsb:MaturitiesOfCertificatesOfDeposit

ebsb:MortgageBankingGainsNet

ebsb:OccupancyAndEquipmentExpense

ebsb:PercentageOfLoanPortfolio
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
ebsb:ProceedsFromFederalReserveLoanBankBorrowings

ebsb:ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquityAvailableForSaleSecurities

ebsb:ProceedsFromStockOptionsExercisedNetOfIncomeTaxesPaid

ebsb:ProvisionForCreditAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
ebsb:RepaymentOfFederalReserveLoanBankBorrowings

ebsb:ShareBasedCompensationExcludingEmployeeStockOwnershipPlanCompensationExpense

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:AmortizationOfDeferredLoanOriginationFeesNet

us-gaap:AmortizationOfESOPAward
us-gaap:StatementEquityComponents

us-gaap:BankOwnedLifeInsuranceIncome

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:DepreciationAndAmortization

us-gaap:DividendIncomeOperating

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:GainsLossesOnSalesOfAssets

us-gaap:ImpairedFinancingReceivableAverageRecordedInvestment
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableInterestIncomeAccrualMethod
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableInterestIncomeCashBasisMethod
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInLoansHeldForSale

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestIncomeAndFeesBankersAcceptancesCertificatesOfDepositAndCommercialPaper

us-gaap:InterestIncomeDebtSecuritiesOperating

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:LaborAndRelatedExpense

us-gaap:NoninterestExpense

us-gaap:NoninterestIncome

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherNoninterestExpense

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:ProceedsFromFederalHomeLoanBankBorrowings

us-gaap:ProceedsFromLifeInsurancePolicies

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock

us-gaap:ProfessionalFees

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

ebsb:AccruedCostsForSupplementalRetirementPlan
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
ebsb:AccruedInterestPayableAtFairValue
us-gaap:FairValueByMeasurementBasis

ebsb:AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleAdjustmentTax

ebsb:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTax

ebsb:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue
us-gaap:FinancialInstrument
us-gaap:InvestmentType

ebsb:BankOwnedLifeInsuranceLiability

ebsb:CommonEquityTierOneLeverageCapital
dei:LegalEntity

ebsb:CoreDepositIntangibleAsset

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

ebsb:DeferredTaxAssetsAcquisitionCosts

ebsb:DeferredTaxAssetsNonaccrualInterest

ebsb:DeferredTaxLiabilityDepreciationAndAmortization

ebsb:DepositsOtherThanTimeDeposits

ebsb:DisallowedGoodwill
dei:LegalEntity

ebsb:DividendPaymentReserveBalance
us-gaap:ConsolidatedEntities
ebsb:ESOPLoanReceivable

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFive

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFour

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearThree

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearTwo

ebsb:EmployeeStockOwnershipPlanESOPNumberOfSharesPaidOutToParticipants
us-gaap:VariableRate
ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateAfterSixYearsFromBalanceSheetDate
us-gaap:VariableRate
ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFiveToSixYearsFromBalanceSheetDate
us-gaap:VariableRate
ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterSixYearsOfBalanceSheetDate
us-gaap:VariableRate
ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFiveToSixYearsOfBalanceSheetDate

ebsb:FederalIncomeTaxReserveForCreditLosses

ebsb:FederalReserveBankRemainingBorrowingCapacity
us-gaap:EquitySecuritiesByIndustry
ebsb:FinancingReceivableCreditQualityRating
us-gaap:EquitySecuritiesByIndustry, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:InternalCreditAssessment

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructurings

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsAccrualStatus
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsNonAccrualStatus
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:ImpairedFinancingReceivableWithRelatedAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancialInstrument
ebsb:InterestBearingDemandDeposit

ebsb:InterestBearingDemandDepositBrokered

ebsb:InterestBearingDomesticDepositListingServiceCertificateOfDeposit
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
ebsb:InterestReceivableFairValue
us-gaap:FairValueByMeasurementBasis
dei:LegalEntity
ebsb:LeverageCapital
us-gaap:ConsolidatedEntities
dei:LegalEntity
ebsb:LeverageCapitalRatio
us-gaap:ConsolidatedEntities
dei:LegalEntity
ebsb:LeverageCapitalRequiredToBeWellCapitalized
us-gaap:ConsolidatedEntities
dei:LegalEntity
ebsb:LeverageCapitalRequiredToBeWellCapitalizedRatio
us-gaap:ConsolidatedEntities

ebsb:LineOfCreditWithFederalHomeLoanBank

ebsb:LoanCommitmentsToOriginate
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:EquitySecuritiesByIndustry
ebsb:LoansAndLeasesReceivableRatioToAllLoans
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

ebsb:LoansServicedForFederalHomeLoanBankWithRecourseProvision

ebsb:NonReciprocalInterestBearingDemandDepositBrokered

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

ebsb:PropertyPlantAndEquipmentExcludingRightOfUseAsset

ebsb:ResidentialRealEstateLoansServicedForOthersUnpaidPrincipalBalances

ebsb:ServicingLoans

ebsb:TimeDeposits250000OrMore

ebsb:TimeDepositsLessThan250000

ebsb:WeightedAverageRateDomesticDepositListingServiceCertificatesOfDeposit

us-gaap:AccruedLiabilitiesAndOtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
us-gaap:FederalHomeLoanBankAdvancesOption
us-gaap:AdvancesFromFederalHomeLoanBanks
us-gaap:VariableRate
us-gaap:FairValueByAssetClass
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument
us-gaap:InvestmentType

us-gaap:BankOwnedLifeInsurance

us-gaap:Capital
dei:LegalEntity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndDueFromBanks

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:ConsolidatedEntities

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank
us-gaap:DebtSecuritiesAvailableForSaleRestricted
us-gaap:ShortTermDebtType

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsGross
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfDomesticSubsidiaries

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DepositsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:DepositsMoneyMarketDeposits

us-gaap:DepositsSavingsDeposits
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount

us-gaap:EmployeeStockOwnershipPlanESOPDeferredSharesFairValue

us-gaap:EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares

us-gaap:EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares

us-gaap:EmployeeStockOwnershipPlanESOPSharesInESOP
us-gaap:Range, us-gaap:FederalHomeLoanBankAdvancesOption
us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate
us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FederalHomeLoanBankAdvancesLongTerm
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFourToFiveYearsFromBalanceSheetDate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate
us-gaap:VariableRate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateThreeToFourYearsFromBalanceSheetDate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate
us-gaap:VariableRate
us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate
us-gaap:VariableRate

us-gaap:FederalHomeLoanBankStock

us-gaap:FinancingReceivableAllowanceForCreditLosses
dei:LegalEntity
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentPastDue
us-gaap:EquitySecuritiesByIndustry
us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:FinancingReceivableRevolving
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FiniteLivedCoreDepositsGross
dei:LegalEntity
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:ImpairedFinancingReceivableRecordedInvestment
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableRelatedAllowance
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableUnpaidPrincipalBalance

us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:InterestBearingDepositLiabilities

us-gaap:InterestBearingDomesticDepositBrokered

us-gaap:InterestBearingDomesticDepositTimeDeposits
us-gaap:DerivativeInstrumentRisk
us-gaap:InterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAtFairValueNet

us-gaap:InterestReceivable
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:InvestmentInFederalHomeLoanBankStockFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LoansAndLeasesReceivableAllowance
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:LoansAndLeasesReceivableDeferredIncome

us-gaap:LoansAndLeasesReceivableGrossCarryingAmount
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansAndLeasesReceivableNetReportedAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LoansHeldForSaleFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansPledgedAsCollateral
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:MarketableSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:NotesReceivableGross
us-gaap:EquitySecuritiesByIndustry
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:OperatingLeasesFutureMinimumPaymentsDue

us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInFiveYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInFourYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInThreeYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInTwoYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueThereafter
us-gaap:BusinessAcquisition
us-gaap:OperatingLossCarryforwards
us-gaap:OtherCommitments
us-gaap:OtherCommitment

us-gaap:RisksInherentInServicingAssetsAndServicingLiabilitiesFairValueOfInstrumentsUsedToManageRisks

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:ShortTermBorrowings
us-gaap:Range
us-gaap:TangibleCapital

us-gaap:TimeDepositMaturitiesAfterYearFive

us-gaap:TimeDepositMaturitiesYearFive

us-gaap:TimeDepositMaturitiesYearFour

us-gaap:TimeDepositMaturitiesYearThree

us-gaap:TimeDepositMaturitiesYearTwo

us-gaap:TimeDeposits

us-gaap:TimeDepositsWeightedAverageInterestRateMaturitiesGreaterThanFiveYears

us-gaap:TimeDepositsWeightedAverageInterestRateMaturitiesYearFive

us-gaap:TimeDepositsWeightedAverageInterestRateMaturitiesYearFour

us-gaap:TimeDepositsWeightedAverageInterestRateMaturitiesYearOne

us-gaap:TimeDepositsWeightedAverageInterestRateMaturitiesYearThree

us-gaap:TimeDepositsWeightedAverageInterestRateMaturitiesYearTwo

us-gaap:UnearnedESOPShares

us-gaap:WeightedAverageRateDomesticDepositBrokered

us-gaap:WeightedAverageRateDomesticDepositTimeDeposits

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Liability
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Long Term Debt
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInInvestingActivities
Proceeds From Sale Of Productive Assets
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
BanksAndOrInsurance
Available For Sale Debt Securities Amortized Cost Basis
AssetsBanks
Available For Sale Securities Debt Securities
LiabilitiesBanks
Short Term Borrowings

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:CommonStockValue ▂▁▁▁▁▁▄▃▃▄▄▆▅▅▅▅▄▄▄▄▄▅█▇██▇0.5260.5240.5240.5240.5240.5240.5340.5330.5330.5350.5350.5420.5390.540.540.5390.5370.5360.5360.5370.5370.5390.5490.5450.550.5490.547NANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▃▃50.9431650.56545950.29529550.24804850.21123450.92025951.53943651.45418651.51167851.46791751.95513952.7323452.86778753.08381553.02614152.67296252.42248652.52673752.10251152.09300952.13747552.66392153.09265253.0238553.1665653.00362152.87482253.15628754.125765162454.0696013148323.42475379662716322.908697275487131.65854379080767131.5984712772939
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▃▃50.37546850.23961150.2017250.16902450.13124950.63498351.02722950.9237651.0518851.12059951.53087851.49244851.43772651.53183551.42579351.22920351.00396750.94963450.94003750.98263351.02698551.56968351.98200951.94005552.07488951.86214651.73472652.04334653.047448179653.0119218956317.44380102990186317.5121941350489129.78098550370285129.7192344846723
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption▁█0.0010370.053381NA0.1325690.1683350.093545NA0.086110.1216080.140527NA0.1162460.0636290.033356NA0.0798020.00.0NA0.153760.2489040.392753NA0.0366730.0377890.0NANA0.00.0NANA0.04670.0
us-gaap:EarningsPerShareBasic ▆█▆▆▆▅▆▇▅▅▄▆▅▄▃▅▄▃▄▄▃▃▃▂▂▃▃▃▂▂▁▁▁▁0.330.480.360.330.340.260.330.390.30.290.240.340.270.230.180.260.220.180.220.190.120.140.130.110.110.120.120.120.102107498774710020.089854598921744830.0133452048717150850.0166815060896438570.0233541085255013980.023354108525501398
us-gaap:EarningsPerShareDiluted ▆█▆▆▆▅▆▇▅▅▄▆▅▄▃▅▄▄▄▄▂▃▃▂▂▃▂▂▂▂▁▁▁▁0.320.480.360.330.340.250.330.380.290.290.240.330.270.230.170.250.220.180.220.180.110.140.130.110.110.120.110.110.102107498774710020.089854598921744830.0116770542627506990.0166815060896438570.0233541085255013980.023354108525501398
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▆█▆▆▆▅▆▇▅▅▅▆▅▄▃▅▄▄▄▄▃▃▃▂▂▂▃▂▃▂▂▂▁▂16.53124.24717.97216.66517.3613.14316.87319.76115.30815.25512.82217.24413.98311.7496.52714.0511.2189.47212.07110.4427.3568.2198.1412.024.2425.2145.8833.5826.864.7964.814.7920.2944.722
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▅█▆▅▆▄▅▆▅▅▄▅▄▄▆▅▄▃▄▄▂▃▂▂▂▂▂▂▂▂▁▂▁▁22.03633.02524.30122.38823.08717.22222.57726.19720.22919.78615.10821.81118.5715.30324.88420.03517.58413.92917.95114.5818.76410.77510.2828.5098.1679.6159.0999.0458.2997.0326.2478.5934.2254.435
us-gaap:IncomeTaxExpenseBenefit ▃▅▃▃▃▂▃▄▃▃▂▃▃▂█▄▃▃▄▃▂▂▂▂▂▂▂▂▂▂▁▂▁▁5.498.7056.185.7145.8084.2455.5096.5085.0614.7152.754.4544.5083.30915.8636.7026.2374.6856.6425.0842.8573.2983.4072.7672.5823.213.0623.032.7952.2612.2323.2721.21.367
us-gaap:IncomeTaxesPaidNet ▇▂▂█▂▂▂▃▄▂▁▃15.9353.9582.718.7243.3453.0753.4126.148.9252.561.0156.343NANA5.887.2512.02.0353.633.289.2153.0263.671.7257.121.394.9680.464.252.783NANANANA
us-gaap:InterestAndFeeIncomeLoansAndLeases ▆▇▇▇▇████▇▇▆▆▆▅▅▄▄▄▄▃▃▃▂▂▂▂▂▂▂▁▁▁▁54.91857.16261.59960.91861.44564.03764.80166.12164.0461.64159.42455.84953.90449.98549.14446.59743.19540.48940.17237.44434.82833.09731.55530.15328.54628.33227.6526.61725.11224.43523.93622.88921.7320.794
us-gaap:InterestExpense ▂▃▃▄▅▇███▇▆▅▅▄▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁7.6629.3210.88412.79714.77920.9223.17724.30823.80421.87619.53916.74714.812.15111.5449.9169.0538.3997.837.1186.3845.8055.35.1254.8415.1855.285.1455.0625.0265.1865.2234.9364.79
us-gaap:InterestExpenseLongTermDebt ▆▆▇▇▇▇█▇▆▄▄▄▄▃▃▃▂▂▂▂▁▁▁▁▁▁3.4533.5914.1133.9994.1364.1434.4774.1293.1512.432.4492.4632.0491.6421.4441.3881.1140.980.8680.8450.7230.5710.4950.4820.4820.508NANANANANANANANA
us-gaap:InterestIncomeExpenseNet ▇▇█▇▇▇▆▇▆▆▆▆▆▆▅▅▅▄▄▄▃▃▃▃▃▂▂▂▂▂▁▁▁▁47.76848.40151.45548.80947.37145.09843.65444.21742.4742.59742.17341.36741.04739.84839.32938.05435.45633.35333.41931.30229.45528.37927.33926.21324.94624.39323.60522.7221.23920.60220.02719.09718.31917.626
us-gaap:MarketingAndAdvertisingExpense ▆▄▇▁▆▇▇▅█▇█▄▅▅▆▃▅▄▅▄▂▃▇▃▄▄▂▃▂▃▄▁▄▂1.0320.8961.1650.5541.031.231.1511.0191.2991.1621.2520.8321.0060.9671.1310.7150.9530.8540.9730.8320.6990.7131.160.7660.8950.8940.6370.7690.6880.8070.9070.5390.8120.691
us-gaap:NetIncomeLoss ▅█▆▅▆▄▆▆▅▅▄▆▅▄▃▄▄▃▄▃▂▂▂▂▂▂▂▂▂▂▁▂▁▁16.54624.3218.12116.67417.27912.97717.06819.68915.16815.07112.35817.35714.06211.9949.02113.33311.3479.24411.3099.4975.9077.4776.8755.7425.5856.4056.0376.0155.5044.7714.0155.3213.0253.068
us-gaap:ProfitLoss ▄█▄▄▄▂▄▅▃▃▁▄▂▁16.54624.3218.12116.67417.27912.97717.06819.68915.16815.07112.35817.35714.06211.994NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:Assets ▇████████▇▇▆▆▆▆▅▅▄▄▄▃▃▂▂▂▂▂▂▂▁▁6287.1416503.9256619.8486566.7336417.976348.5546343.6946363.146368.5726281.3566178.6835775.3285677.5885460.6985299.4555086.4144787.4144638.7124436.0024173.133929.0763729.4553524.5093375.8483302.2613347.6253278.5263168.7673055.9272795.1372682.101NANANA
us-gaap:Liabilities ▇████████▇▇▆▆▆▆▅▅▄▄▃▃▂▂▂▂▂▂▁▂▁▁5485.9275714.8415850.9635818.4695683.6975628.9335617.1075651.1585672.8715594.9685504.0295096.1855012.9224805.0914653.0564446.014160.6854022.5343828.7053576.0743342.4243146.7712936.3832792.7492713.6642764.022700.8162597.7282793.9922540.572432.896NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇████████▇▇▆▆▆▆▅▅▄▄▄▃▃▂▂▂▂▂▂▂▁▁6287.1416503.9256619.8486566.7336417.976348.5546343.6946363.146368.5726281.3566178.6835775.3285677.5885460.6985299.4555086.4144787.4144638.7124436.0024173.133929.0763729.4553524.5093375.8483302.2613347.6253278.5263168.7673055.9272795.1372682.101NANANA
us-gaap:StockholdersEquity ███▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▁▁▁▁▁▁801.214789.084768.885748.264734.273719.621726.587711.982695.701686.388674.654679.143664.666655.607646.399640.404626.729616.178607.297597.056586.652582.684588.126583.099588.597583.605577.71571.039261.935254.567249.205243.65238.897239.097
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:Cash NANA869.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities,us-gaap:RelatedPartyTransactionsByRelatedParty srt:ParentCompany,srt:SubsidiariesNANA12.706NANANA24.883NANANA58.643NANANA23.072NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA91.609NANANA88.073NANANA81.9NANANA74.618NANANA72.092NANANA67.992NANANA63.815NANANA62.427NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA36.82NANANA39.146NANANA36.878NANANA35.777NANANA34.421NANANA34.113NANANA33.883NANANA33.393NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:EquipmentNANA28.514NANANA26.204NANANA24.258NANANA21.338NANANA20.799NANANA18.956NANANA16.918NANANA16.154NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandAndLandImprovementsNANA8.472NANANA8.472NANANA8.472NANANA8.472NANANA8.243NANANA8.243NANANA8.243NANANA8.243NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA17.803NANANA14.251NANANA12.292NANANA9.031NANANA8.629NANANA6.68NANANA4.771NANANA4.637NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA42.222NANANA39.956NANANA36.76NANANA33.651NANANA30.665NANANA27.744NANANA25.303NANANA23.001NANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇█████▇█▇▃▂▂▂▂▁▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁64.64965.39466.8567.91767.09867.52765.84165.58266.2862.27945.1442.44841.58441.41540.96740.07740.62141.09941.42740.74740.82140.73340.24839.53938.738.70538.51238.60238.96739.16139.426NANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities,us-gaap:RelatedPartyTransactionsByRelatedParty srt:ParentCompany,srt:SubsidiariesNANA741.343NANANA683.437NANANA594.855NANANA532.6NANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ███████████▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁20.37820.37820.37820.37820.37820.37820.37820.37820.37820.37820.37819.63819.63819.63819.63813.68713.68713.68713.68713.68713.68713.68713.68713.68713.68713.68713.68713.68713.68713.68713.687NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CoreDepositsNANA1.651NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA21.355NANA16.78216.72618.39318.30118.2118.196NANANA15.244NANANA21.461NANANA21.246NANANA15.61NANANA13.478NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA17.463NANANA17.7NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EquitySecuritiesFvNi ▁▁▄██▅▇▆▆▆▅█▇9.1128.912.18916.20316.40113.1315.24314.31314.77614.76313.43716.13515.428NA17.775NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:TimeDepositMaturitiesYearOne ▄▅▅▄▅▇██▇▆▆▄▃▂▂▂▃▃▂▃▂▂▂▁▁▁▁▁▁▁▁828.443893.949883.747862.941894.8931138.4271316.7911314.1071232.01104.791043.283843.346724.077580.563600.012597.795632.469651.353539.903637.657574.351567.025504.756453.212463.515473.75493.676436.761452.855443.565440.178NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:LongTermDebt ▆▆▇██▇▆▆▆▅▅▆▆▆▅▅▄▃▃▃▃▂▁▁▁▁▁▁▂▂▁560.625560.625708.245779.279779.101720.873636.245636.615600.088525.985536.88610.772591.66582.561513.444471.069434.015334.827322.512319.82320.624211.426147.226140.023140.817144.11171.899172.687211.34202.123161.903NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:StockholdersEquity ███▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▁▁▁▁▁▁801.214789.084768.885748.264734.273719.621726.587711.982695.701686.388674.654679.143664.666655.607646.399640.404626.729616.178607.297597.056586.652582.684588.126583.099588.597583.605577.71571.039261.935254.567249.205243.65238.897239.097
us-gaap:CommonStockValue ▂▁▁▁▁▁▄▃▃▄▄▆▅▅▅▅▄▄▄▄▄▅█▇██▇0.5260.5240.5240.5240.5240.5240.5340.5330.5330.5350.5350.5420.5390.540.540.5390.5370.5360.5360.5370.5370.5390.5490.5450.550.5490.547NANANANANANANA
us-gaap:AdditionalPaidInCapitalCommonStock ▂▂▁▁▁▁▃▃▃▃▃▅▅▆▆▅▅▅▅▅▅▅▇▇███365.607364.751363.995363.093361.98360.901377.213375.618375.76378.41378.583392.545392.955395.531395.716393.903392.446391.316390.065390.587389.318391.399403.737406.214412.367411.894411.476NANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▆▆▆▆▅▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁451.1439.593420.297400.649387.983374.712365.742352.758336.628325.023313.521304.725289.949278.45268.533262.079250.8241.472234.29224.509216.539212.158206.214200.813196.705191.12184.715178.678172.663167.159162.388NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▄▄▄▄▄▄▄▄▄▄▃▃▃▃▄▆▅▅▅▄▄▃▂▁▄▅▆▆█▇▇-0.146-0.131-0.0580.0910.10.019-0.1470.048-0.024-0.164-0.348-0.812-0.699-0.6160.1282.6221.9052.0341.8061.0440.099-1.35-2.092-3.3580.3641.7072.8983.0525.4854.1294.104NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity ebsb:BankNANA-0.058NANANA-0.147NANANA-0.348NANANA0.128NANANA1.806NANANA-2.05NANANA2.929NANANA4.104NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▅█▁▅▃▄▆▃▄▆▅▂▅▅▃14.54720.30633.5732.07419.22410.96616.09922.81613.14714.12422.41717.8698.55922.19219.90511.728NANANANANANANANANANANANA-2.0822.686NANA3.516.044
us-gaap:NetCashProvidedByUsedInInvestingActivities █▇▆▆▅▅▅▆▄▄▁▄▃▂▅▂290.654234.544149.80163.605-20.32151.550.37175.412-58.136-114.715-355.128-110.168-197.97-254.847-18.384-226.912NANANANANANANANANANANANA-42.82-41.519NANA-148.882-33.472
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▂▄▅▄▄▃▃▄▄█▄▆▅▅▇-237.949-135.32929.074127.83252.676-11.85-38.149-31.21761.7872.855391.03876.379202.627146.34100.869280.705NANANANANANANANANANANANA256.089109.194NANA105.512117.6
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▅█▇▃▃▁▄▂▁▄67.252119.521212.448193.51151.57950.666-21.67967.01116.791-27.73658.327NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▄▁▄▄▄▅▄▄▄▃▄▄▄█▄▄▄▃▄▄▄▃▄▄▄▄▄▄▄▃▄▄▄-0.014-0.034-6.472-0.13-0.123-0.121.722-0.12-0.145-0.086-2.086-0.059-0.121-0.3577.407-0.244-0.174-0.166-2.103-0.173-0.344-0.196-2.229-0.035-0.10.003-1.088-0.034-0.06-0.074-3.132-0.037-0.032-0.023
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▅█▁▅▃▄▆▃▄▆▅▂▅▅▃14.54720.30633.5732.07419.22410.96616.09922.81613.14714.12422.41717.8698.55922.19219.90511.728NANANANANANANANANANANANA-2.0822.686NANA3.516.044
us-gaap:NetIncomeLoss ▅█▆▅▆▄▆▆▅▅▄▆▅▄▃▄▄▃▄▃▂▂▂▂▂▂▂▂▂▂▁▂▁▁16.54624.3218.12116.67417.27912.97717.06819.68915.16815.07112.35817.35714.06211.9949.02113.33311.3479.24411.3099.4975.9077.4776.8755.7425.5856.4056.0376.0155.5044.7714.0155.3213.0253.068
us-gaap:ProfitLoss ▄█▄▄▄▂▄▅▃▃▁▄▂▁16.54624.3218.12116.67417.27912.97717.06819.68915.16815.07112.35817.35714.06211.994NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▇▆▆▅▅▅▆▄▄▁▄▃▂▅▂290.654234.544149.80163.605-20.32151.550.37175.412-58.136-114.715-355.128-110.168-197.97-254.847-18.384-226.912NANANANANANANANANANANANA-42.82-41.519NANA-148.882-33.472
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▁▁▂▄▆▄▄▂▃▇█▄▃▃▁▁▁▂▄▂▃▃▄▄▂▂▂▁▂▂▂▁▂▅0.0620.1050.4951.5842.6721.651.4830.7570.9163.0183.3871.5280.8581.2030.2920.1880.2880.4451.4390.6670.8181.1761.3661.4620.5820.7670.480.2180.3830.3070.6220.2480.3051.74
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▂▄▅▄▄▃▃▄▄█▄▆▅▅▇-237.949-135.32929.074127.83252.676-11.85-38.149-31.21761.7872.855391.03876.379202.627146.34100.869280.705NANANANANANANANANANANANA256.089109.194NANA105.512117.6
us-gaap:PaymentsOfDividendsCommonStock █▇▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▃▃▃▃▃▁5.0244.0084.0074.0084.0074.273.5593.5633.5693.5622.582.5682.5762.5742.0472.0412.041.5281.5271.5261.4491.646-0.172NANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.017.680.01.5484.0751.64714.3340.04.0651.996NANANANA1.844NANANA2.859NANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value526000.0524000.0524000.0524000.0524000.0524000.0534000.0533000.0533000.0535000.0535000.0542000.0539000.0540000.0540000.0539000.0537000.0536000.0536000.0537000.0537000.0539000.0549000.0545000.0550000.0549000.0547000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value505050505050515151515152525353525252525252525353535352535454323322131131
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value505050505050515051515151515151515150505051515151525151525353317317129129
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-06-302014-03-312013-06-302013-03-31
Value1037.053381.0132570.0168340.093545.086110.0121610.0140530.0116250.063629.033356.079802.000153760.0248900.0392750.036673.037789.000046700.00
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.00.00.0100.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.330.480.360.330.340.260.330.390.30.290.240.340.270.230.180.260.220.180.220.190.120.140.130.110.110.120.120.120.102110.0898550.0133450.0166820.0233540.023354
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.320.480.360.330.340.250.330.380.290.290.240.330.270.230.170.250.220.180.220.180.110.140.130.110.110.120.110.110.102110.0898550.0116770.0166820.0233540.023354
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value16241716171316191515121713116.52714119.47212107.3568.2198.1412.024.2425.2145.8833.5826.864.7964.814.7920.2944.722
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating29.842.028.827.127.919.925.228.823.123.720.829.725.022.612.829.325.222.729.327.220.524.024.96.414.217.620.412.926.118.719.119.71.321.1

us-gaap:ComprehensiveIncomeNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.015-0.073-0.0090.0810.1660.0720.140.1840.464-0.113-0.079-0.245-2.4940.717-0.1290.2280.7620.9451.4490.7421.266-3.722-1.343-1.191-0.154-2.4331.3560.0250.795-0.529-2.7311.654
Percentage of ComprehensiveIncomeNetOfTax-0.1-0.3-0.10.51.30.40.91.23.6-0.7-0.6-2.1-38.25.1-1.12.46.39.019.79.015.6-184.3-31.7-22.8-2.6-67.919.80.516.5-11.0-928.935.0
Percentage of InterestAndDividendIncomeOperating-0.0-0.1-0.00.10.30.10.20.30.8-0.2-0.1-0.5-4.91.5-0.30.51.82.54.02.23.9-11.9-4.5-4.0-0.5-8.75.20.13.2-2.2-11.77.4
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1624161712191515121714119.02113119.244119.4975.9077.4776.8755.7425.5856.4056.0376.0155.5044.7714.0155.3213.0253.068
Percentage of ComprehensiveIncomeNetOfTax100.1100.3100.199.598.799.699.198.896.4100.7100.6102.1138.294.9101.197.693.791.080.391.084.4284.3131.7122.8102.6167.980.299.583.5111.01028.965.0
Percentage of InterestAndDividendIncomeOperating29.942.127.127.819.728.722.923.420.029.925.223.117.727.825.522.127.424.716.521.921.118.318.721.720.921.620.918.615.921.913.013.7
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value22332422231722262019152118152420171317148.76410108.5098.1679.6159.0999.0458.2997.0326.2478.5934.2254.435
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating39.857.239.036.337.126.133.838.230.530.724.537.533.329.448.941.839.533.443.538.024.531.531.527.227.432.531.532.531.627.424.835.318.219.8

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value5.498.7056.185.7145.8084.2455.5096.5085.0614.7152.754.4544.5083.309156.7026.2374.6856.6425.0842.8573.2983.4072.7672.5823.213.0623.032.7952.2612.2323.2721.21.367
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating9.915.19.99.39.36.48.29.57.67.34.57.78.16.431.214.014.011.216.113.28.09.610.48.88.710.910.610.910.68.88.913.55.26.1

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value153.9582.7183.3453.0753.4126.148.9252.561.0156.3435.887.25122.0353.633.289.2153.0263.671.7257.121.394.9680.464.252.783
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.76.94.330.45.44.75.19.013.54.01.610.911.615.127.04.98.88.525.78.911.25.523.94.717.21.716.210.9

Interest And Fee Income Loans And Leases

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value54576160616464666461595553494946434040373433313028282726252423222120
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating99.199.098.898.998.997.097.096.596.695.696.396.196.596.196.697.197.097.097.497.597.296.896.796.295.895.895.795.595.595.394.994.193.492.8

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value7.6629.32101214202324232119161412119.9169.0538.3997.837.1186.3845.8055.35.1254.8415.1855.285.1455.0625.0265.1865.2234.9364.79
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating13.816.117.520.823.831.734.735.535.933.931.728.826.523.422.720.720.320.119.018.517.817.016.216.416.317.518.318.519.219.620.621.521.221.4

Interest Expense Long Term Debt

us-gaap:InterestExpenseLongTermDebt

us-gaap:InterestExpenseLongTermDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3.4533.5914.1133.9994.1364.1434.4774.1293.1512.432.4492.4632.0491.6421.4441.3881.1140.980.8680.8450.7230.5710.4950.4820.4820.508
Percentage of InterestExpenseLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating6.26.26.66.56.76.36.76.04.83.84.04.23.73.22.82.92.52.32.12.22.01.71.51.51.61.7

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value47485148474543444242424141393938353333312928272624242322212020191817
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating86.283.982.579.276.268.365.364.564.166.168.371.273.576.677.379.379.779.981.081.582.283.083.883.683.782.581.781.580.880.479.478.578.878.6

Marketing And Advertising Expense

us-gaap:MarketingAndAdvertisingExpense

us-gaap:MarketingAndAdvertisingExpense


Marketing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1032000.0896000.01165000.0554000.01030000.01230000.01151000.01019000.01299000.01162000.01252000.0832000.01006000.0967000.01131000.0715000.0953000.0854000.0973000.0832000.0699000.0713000.01160000.0766000.0895000.0894000.0637000.0769000.0688000.0807000.0907000.0539000.0812000.0691000.0
Percentage of MarketingAndAdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.91.61.90.91.71.91.71.52.01.82.01.41.81.92.21.52.12.02.42.22.02.13.62.43.03.02.22.82.63.13.62.23.53.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value16241816171217191515121714119.02113119.244119.4975.9077.4776.8755.7425.5856.4056.0376.0155.5044.7714.0155.3213.0253.068
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating29.942.129.127.127.819.725.528.722.923.420.029.925.223.117.727.825.522.127.424.716.521.921.118.318.721.720.921.620.918.615.921.913.013.7

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1624181617121719151512171411
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating29.942.129.127.127.819.725.528.722.923.420.029.925.223.1

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value6287650366196566641763486343636363686281617857755677546052995086478746384436417339293729352433753302334732783168305527952682
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value775730680647
Percentage of Assets11.711.511.012.2
Percentage of Assets11.711.511.012.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value5485571458505818568356285617565156725594550450965012480546534446416040223828357633423146293627922713276427002597279325402432
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets87.387.988.488.688.688.788.588.889.189.189.188.288.388.087.887.486.986.786.385.785.184.483.382.782.282.682.482.091.490.990.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value6287650366196566641763486343636363686281617857755677546052995086478746384436417339293729352433753302334732783168305527952682
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value775730680647
Percentage of LiabilitiesAndStockholdersEquity11.711.511.012.2
Percentage of Assets11.711.511.012.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value801789768748734719726711695686674679664655646640626616607597586582588583588583577571261254249243238239233219
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.712.111.611.411.411.311.511.210.910.910.911.811.712.012.212.613.113.313.714.314.915.616.717.317.817.417.618.08.69.19.30.00.00.00.00.0

us-gaap:StockholdersEquity dei:LegalEntity

ebsb:Bank


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value741683594532467424402235
Percentage of StockholdersEquity96.494.188.282.477.072.269.694.6
Percentage of Assets11.210.89.610.110.512.012.38.8
Percentage of Assets ebsb:Bank0.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value768726674646
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets11.611.510.912.2
Percentage of Assets srt:ParentCompany99.299.599.199.9

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

ebsb:UnearnedCompensationESOP


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312012-12-31
Value-15.873-15.653-15.873-16.093-16.314-16.535-16.755-16.975-17.196-17.416-17.637-17.857-18.078-18.298-18.518-18.739-18.959-19.18-19.4-19.621-19.841-20.062-20.282-20.503-20.723-20.944-21.164-21.548-5.796-6.21
Percentage of StockholdersEquity-2.0-2.0-2.1-2.2-2.2-2.3-2.3-2.4-2.5-2.5-2.6-2.6-2.7-2.8-2.9-2.9-3.0-3.1-3.2-3.3-3.4-3.4-3.4-3.5-3.5-3.6-3.7-3.8-2.3-2.7
Percentage of Assets-0.3-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.5-0.5-0.5-0.6-0.6-0.6-0.6-0.6-0.7-0.20.0
Percentage of Assets ebsb:UnearnedCompensationESOP0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value-0.146-0.131-0.0580.0910.10.019-0.1470.048-0.024-0.164-0.348-0.812-0.699-0.6160.1282.6221.9052.0341.8061.0440.099-1.35-2.092-3.3580.3641.7072.8983.0525.4854.1294.1043.3093.8386.5694.9153.985
Percentage of StockholdersEquity-0.0-0.0-0.00.00.00.0-0.00.0-0.0-0.0-0.1-0.1-0.1-0.10.00.40.30.30.30.20.0-0.2-0.4-0.60.10.30.50.52.11.61.61.41.62.72.11.8
Percentage of Assets-0.0-0.0-0.00.00.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.00.00.10.00.00.00.00.0-0.0-0.1-0.10.00.10.10.10.20.10.20.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value36536436336336136037737537537837839239239539539339239139039038939140340641241141141110099999998989897
Percentage of StockholdersEquity45.646.247.348.549.350.251.952.854.055.156.157.859.160.361.261.562.663.564.265.466.467.268.669.770.170.671.272.038.239.239.940.741.341.242.044.4
Percentage of Assets5.85.65.55.55.65.75.95.95.96.06.16.86.97.27.57.78.28.48.89.49.910.511.512.012.512.312.613.03.33.63.70.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302012-12-31
Value0.5260.5240.5240.5240.5240.5240.5340.5330.5330.5350.5350.5420.5390.540.540.5390.5370.5360.5360.5370.5370.5390.5490.5450.550.5490.5470.5470.0
Percentage of StockholdersEquity0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value451439420400387374365352336325313304289278268262250241234224216212206200196191184178172167162158153150146134
Percentage of StockholdersEquity56.355.754.753.552.852.150.349.548.447.446.544.943.642.541.540.940.039.238.637.636.936.435.134.433.432.732.031.365.965.765.265.064.162.762.861.2
Percentage of Assets7.26.86.36.16.05.95.85.55.35.25.15.35.15.15.15.25.25.25.35.45.55.75.95.96.05.75.65.65.76.06.10.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash

us-gaap:Cash

us-gaap:Cash


Cash
Period End2020-12-31
Value869
Percentage of Cash100.0
Percentage of Assets13.1

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:CashAndCashEquivalentsAtCarryingValue

srt:ParentCompany, srt:Subsidiaries


Cash
Period End2020-12-312019-12-312018-12-312017-12-31
Value12245823
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0
Percentage of Assets0.20.40.90.4
Percentage of Assets srt:ParentCompany srt:Subsidiaries0.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9188817472676362
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.41.31.41.61.91.92.3

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Building


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3639363534343333
Percentage of PropertyPlantAndEquipmentGross40.244.445.047.947.750.253.153.5
Percentage of Assets0.60.60.60.70.81.01.01.2
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.0

us-gaap:Equipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2826242120181616
Percentage of PropertyPlantAndEquipmentGross31.129.829.628.628.927.926.525.9
Percentage of Assets0.40.40.40.40.50.50.50.6
Percentage of Assets us-gaap:Equipment0.00.00.00.00.00.00.00.0

us-gaap:LandAndLandImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value8.4728.4728.4728.4728.2438.2438.2438.243
Percentage of PropertyPlantAndEquipmentGross9.29.610.311.411.412.112.913.2
Percentage of Assets0.10.10.10.20.20.20.30.3
Percentage of Assets us-gaap:LandAndLandImprovements0.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1714129.0318.6296.684.7714.637
Percentage of PropertyPlantAndEquipmentGross19.416.215.012.112.09.87.57.4
Percentage of Assets0.30.20.20.20.20.20.10.2
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4239363330272523
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.70.80.80.9

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value64656667676765656662454241414040404141404040403938383838383939
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.01.01.01.01.11.01.01.01.00.70.70.70.80.80.80.80.90.91.01.01.11.11.21.21.21.21.21.31.41.5

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:ParentCompany, srt:Subsidiaries


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value741683594532
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0
Percentage of Assets11.210.89.610.1
Percentage of Assets srt:ParentCompany srt:Subsidiaries0.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value20202020202020202020201919191913131313131313131313131313131313
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.30.30.30.30.30.30.40.40.40.40.40.40.40.40.50.5

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:CoreDeposits


Finite
Period End2020-12-31
Value1651000.0
Percentage of FiniteLivedIntangibleAssetsNet100.0
Percentage of Assets0.0
Percentage of Assets us-gaap:CoreDeposits0.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value211616181818181521211513
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.30.50.60.50.5

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-31
Value1717
Percentage of OperatingLeaseRightOfUseAsset100.0100.0
Percentage of Assets0.30.3

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.1128.9121616131514141413161517
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.20.20.20.20.20.20.30.30.3

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.1128.9121616131514141413
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.20.20.20.20.20.2
Percentage of Assets us-gaap:FairValueInputsLevel10.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.1128.9121616131514141413
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.20.20.20.20.20.2
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.1128.9121616131514141413
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.20.20.20.20.20.2
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.1128.9121616131514141413
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.20.30.20.20.20.20.20.2
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2817233723261714115.4416.47813114.1455.2319.145.8533.9143.1058.2818.9233.9763.2843.8424.7853.5946.4562.3934.2133.3952.469
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.30.40.60.40.40.30.20.20.10.10.20.20.10.10.20.10.10.10.20.20.10.10.10.10.10.20.10.10.10.1

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.8622.8242.7853.316
Percentage of OtherAssets12.016.543.063.4
Percentage of Assets0.00.00.00.1
Percentage of Assets srt:ParentCompany0.40.40.40.5

Time Deposit Maturities Year One

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:TimeDepositMaturitiesYearOne


Time
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value828893883862894113813161314123211041043843724580600597632651539637574567504453463473493436452443440
Percentage of TimeDepositMaturitiesYearOne100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.213.713.313.113.917.920.820.719.317.616.914.612.810.611.311.813.214.012.215.314.615.214.313.414.014.215.113.814.815.916.4

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value560560708779779720636636600525536610591582513471434334322319320211147140140144171172211202161
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.98.610.711.912.111.410.010.09.48.48.710.610.410.79.79.39.17.27.37.78.25.74.24.14.34.35.25.46.97.26.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-31
Value1717
Percentage of OperatingLeaseLiability100.0100.0
Percentage of Assets0.30.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value2049000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value801789768748734719726711695686674679664655646640626616607597586582588583588583577571261254249243238239233219
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.712.111.611.411.411.311.511.210.910.910.911.811.712.012.212.613.113.313.714.314.915.616.717.317.817.417.618.08.69.19.30.00.00.00.00.0

us-gaap:StockholdersEquity dei:LegalEntity

ebsb:Bank


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value741683594532467424402235
Percentage of StockholdersEquity96.494.188.282.477.072.269.694.6
Percentage of Assets11.210.89.610.110.512.012.38.8
Percentage of Assets ebsb:Bank0.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value768726674646
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets11.611.510.912.2
Percentage of Assets srt:ParentCompany99.299.599.199.9

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

ebsb:UnearnedCompensationESOP


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312012-12-31
Value-15.873-15.653-15.873-16.093-16.314-16.535-16.755-16.975-17.196-17.416-17.637-17.857-18.078-18.298-18.518-18.739-18.959-19.18-19.4-19.621-19.841-20.062-20.282-20.503-20.723-20.944-21.164-21.548-5.796-6.21
Percentage of StockholdersEquity-2.0-2.0-2.1-2.2-2.2-2.3-2.3-2.4-2.5-2.5-2.6-2.6-2.7-2.8-2.9-2.9-3.0-3.1-3.2-3.3-3.4-3.4-3.4-3.5-3.5-3.6-3.7-3.8-2.3-2.7
Percentage of Assets-0.3-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.5-0.5-0.5-0.6-0.6-0.6-0.6-0.6-0.7-0.20.0
Percentage of Assets ebsb:UnearnedCompensationESOP0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value-0.146-0.131-0.0580.0910.10.019-0.1470.048-0.024-0.164-0.348-0.812-0.699-0.6160.1282.6221.9052.0341.8061.0440.099-1.35-2.092-3.3580.3641.7072.8983.0525.4854.1294.1043.3093.8386.5694.9153.985
Percentage of StockholdersEquity-0.0-0.0-0.00.00.00.0-0.00.0-0.0-0.0-0.1-0.1-0.1-0.10.00.40.30.30.30.20.0-0.2-0.4-0.60.10.30.50.52.11.61.61.41.62.72.11.8
Percentage of Assets-0.0-0.0-0.00.00.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.00.00.10.00.00.00.00.0-0.0-0.1-0.10.00.10.10.10.20.10.20.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value36536436336336136037737537537837839239239539539339239139039038939140340641241141141110099999998989897
Percentage of StockholdersEquity45.646.247.348.549.350.251.952.854.055.156.157.859.160.361.261.562.663.564.265.466.467.268.669.770.170.671.272.038.239.239.940.741.341.242.044.4
Percentage of Assets5.85.65.55.55.65.75.95.95.96.06.16.86.97.27.57.78.28.48.89.49.910.511.512.012.512.312.613.03.33.63.70.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302012-12-31
Value0.5260.5240.5240.5240.5240.5240.5340.5330.5330.5350.5350.5420.5390.540.540.5390.5370.5360.5360.5370.5370.5390.5490.5450.550.5490.5470.5470.0
Percentage of StockholdersEquity0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value451439420400387374365352336325313304289278268262250241234224216212206200196191184178172167162158153150146134
Percentage of StockholdersEquity56.355.754.753.552.852.150.349.548.447.446.544.943.642.541.540.940.039.238.637.636.936.435.134.433.432.732.031.365.965.765.265.064.162.762.861.2
Percentage of Assets7.26.86.36.16.05.95.85.55.35.25.15.35.15.15.15.25.25.25.35.45.55.75.95.96.05.75.65.65.76.06.10.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value526000.0524000.0524000.0524000.0524000.0524000.0534000.0533000.0533000.0535000.0535000.0542000.0539000.0540000.0540000.0539000.0537000.0536000.0536000.0537000.0537000.0539000.0549000.0545000.0550000.0549000.0547000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value365364363363361360377375375378378392392395395393392391390390389391403406412411411
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.85.65.55.55.65.75.95.95.96.06.16.86.97.27.57.78.28.48.89.49.910.511.512.012.512.312.6

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value451439420400387374365352336325313304289278268262250241234224216212206200196191184178172167162
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.26.86.36.16.05.95.85.55.35.25.15.35.15.15.15.25.25.25.35.45.55.75.95.96.05.75.65.65.76.06.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-146000.0-131000.0-58000.091000.0100000.019000.0-147000.048000.0-24000.0-164000.0-348000.0-812000.0-699000.0-616000.0128000.02622000.01905000.02034000.01806000.01044000.099000.0-1350000.0-2092000.0-3358000.0364000.01707000.02898000.03052000.05485000.04129000.04104000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.0-0.0-0.00.00.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.00.00.10.00.00.00.00.0-0.0-0.1-0.10.00.10.10.10.20.10.2

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

ebsb:Bank


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value-58000.0-147000.0-348000.0128000.01806000.0-2050000.02929000.04104000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.098.0101.1100.0
Percentage of Assets-0.0-0.0-0.00.00.0-0.10.10.2
Percentage of Assets ebsb:Bank0.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value1420332.07419101622131422178.559221911-2.0822.6863.516.044
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating26.235.253.93.430.916.624.133.319.821.936.330.715.342.739.124.4-7.910.515.127.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value29023414963-20.321510.37175-58.136-114.715-355.128-110.168-197.97-254.847-18.384-226.912-42.82-41.519-148.882-33.472
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating524.4406.3240.3103.2-32.778.10.6110.1-87.7-177.9-575.5-189.6-354.5-490.1-36.1-473.0-162.8-162.0-640.2-149.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value-237.949-135.3292912752-11.85-38.149-31.217617239176202146100280256109105117
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-429.3-234.546.6207.584.8-17.9-57.1-45.693.2113.0633.6131.4362.8281.4198.3585.2973.7426.1453.7524.6

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value671192121935150-21.6796716-27.73658
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating121.3207.1340.8314.183.076.7-32.497.825.3-43.094.5

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-14000.0-34000.0-6472000.0-130000.0-123000.0-120000.01722000.0-120000.0-145000.0-86000.0-2086000.0-59000.0-121000.0-357000.07407000.0-244000.0-174000.0-166000.0-2103000.0-173000.0-344000.0-196000.0-2229000.0-35000.0-100000.03000.0-1088000.0-34000.0-60000.0-74000.0-3132000.0-37000.0-32000.0-23000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value1420332.07419101622131422178.559221911-2.0822.6863.516.044
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating26.235.253.93.430.916.624.133.319.821.936.330.715.342.739.124.4-7.910.515.127.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value16241816171217191515121714119.02113119.244119.4975.9077.4776.8755.7425.5856.4056.0376.0155.5044.7714.0155.3213.0253.068
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating29.942.129.127.127.819.725.528.722.923.420.029.925.223.117.727.825.522.127.424.716.521.921.118.318.721.720.921.620.918.615.921.913.013.7

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1624181617121719151512171411
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating29.942.129.127.127.819.725.528.722.923.420.029.925.223.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value29023414963-20.321510.37175-58.136-114.715-355.128-110.168-197.97-254.847-18.384-226.912-42.82-41.519-148.882-33.472
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating524.4406.3240.3103.2-32.778.10.6110.1-87.7-177.9-575.5-189.6-354.5-490.1-36.1-473.0-162.8-162.0-640.2-149.3

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value62000.0105000.0495000.01584000.02672000.01650000.01483000.0757000.0916000.03018000.03387000.01528000.0858000.01203000.0292000.0188000.0288000.0445000.01439000.0667000.0818000.01176000.01366000.01462000.0582000.0767000.0480000.0218000.0383000.0307000.0622000.0248000.0305000.01740000.0
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value-237.949-135.3292912752-11.85-38.149-31.217617239176202146100280256109105117
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-429.3-234.546.6207.584.8-17.9-57.1-45.693.2113.0633.6131.4362.8281.4198.3585.2973.7426.1453.7524.6

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5.0244.0084.0074.0084.0074.273.5593.5633.5693.5622.582.5682.5762.5742.0472.0412.041.5281.5271.5261.4491.646-0.172
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312015-12-31
Value0.00.00.0170.01.5484.0751.647140.04.0651.9961.8442.859
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value14.614.4613.1610.438.68.534.114.11
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value3256000.02667000.02352000.02896000.0
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value24192015151515212121211920202119171615141213139.717.434
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:AmortizationOfCoreDepositIntangible

ebsb:AmortizationOfCoreDepositIntangible


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value103000.0103000.0118000.0118000.0118000.0118000.0131000.0131000.0132000.0136000.0148000.0147000.0148000.0147000.0
Percentage of AmortizationOfCoreDepositIntangible100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:AmortizationReversalOfESOPAward

ebsb:AmortizationReversalOfESOPAward


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value-512000.0512000.0338000.0507000.0
Percentage of AmortizationReversalOfESOPAward100.0100.0100.0100.0

ebsb:AmortizationReversalOfESOPAward us-gaap:StatementEquityComponents

ebsb:UnearnedCompensationESOP


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value-220000.0220000.0221000.0220000.0
Percentage of AmortizationReversalOfESOPAward43.043.065.443.4

us-gaap:AdditionalPaidInCapital


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value-292000.0292000.0117000.0287000.0
Percentage of AmortizationReversalOfESOPAward57.057.034.656.6

ebsb:CustomerServiceFees

ebsb:CustomerServiceFees


Customer
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2485000.02199000.02355000.02193000.01948000.02097000.02407000.02428000.02288000.02097000.02371000.02242000.02282000.02170000.02170000.02081000.02214000.0
Percentage of CustomerServiceFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FederalReserveBankBorrowing us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

ebsb:FederalReserveBankBorrowing

ebsb:PaycheckProtectionProgramLiquidityFacility


Federal
Period End2020-12-312020-09-30
Value-26.10.2
Percentage of FederalReserveBankBorrowing100.0100.0

ebsb:IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest

ebsb:IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2422231722262019152118152420171317148.76410108.5098.1679.6159.0999.0458.2997.0326.2478.5934.2254.435
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:IncreaseDecreaseAmortizationOfAcquisitionCosts

ebsb:IncreaseDecreaseAmortizationOfAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-34000.0-32000.0-70000.0-32000.0-18000.0-16000.0-16000.0-16000.0-5000.0-29000.05000.05000.0-98000.021000.046000.042000.026000.054000.038000.033000.035000.039000.042000.044000.024000.023000.022000.011000.011000.09000.0
Percentage of IncreaseDecreaseAmortizationOfAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:InterestPaidBorrowings

ebsb:InterestPaidBorrowings


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.4913.8394.0023.9424.3164.1154.1353.8872.912.6522.4572.361.9431.5651.3711.331.0740.9080.8680.8260.6650.5410.4890.4820.4890.5340.5580.6660.650.6150.7510.8970.9380.924
Percentage of InterestPaidBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:InterestPaidDeposits

ebsb:InterestPaidDeposits


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4.1696.4536.749.352111818202018161412109.9756.261107.1926.8426.075.7075.1434.7334.6114.44.7334.6434.5064.4224.4034.5054.4064.1683.929
Percentage of InterestPaidDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:LoanFeesNet

ebsb:LoanFeesNet


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value39000.095000.0-422000.0264000.0-35000.0674000.0-17000.0436000.053000.077000.041000.0301000.0-158000.0295000.088000.0180000.01634000.068000.0282000.0293000.0-22000.0312000.0203000.0318000.0230000.0
Percentage of LoanFeesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:LoansUnderModificationAmount

ebsb:LoansUnderModificationAmount


Loans
Period End2021-06-302021-03-31
Value-134.1402
Percentage of LoansUnderModificationAmount100.0100.0

ebsb:MaturitiesOfCertificatesOfDeposit

ebsb:MaturitiesOfCertificatesOfDeposit


Maturities
Period End2020-12-312020-09-302019-12-312018-12-312017-12-312016-12-312015-12-31
Value0.00.00.015241010.0
Percentage of MaturitiesOfCertificatesOfDeposit0.00.00.0100.0100.0100.0100.0

ebsb:MortgageBankingGainsNet

ebsb:MortgageBankingGainsNet


Mortgage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value45000.0582000.0728000.0704000.0118000.0411000.069000.099000.0101000.040000.025000.074000.063000.0133000.0109000.0176000.082000.090000.0125000.0274000.0104000.070000.0119000.038000.0268000.0110000.0126000.019000.0267000.0
Percentage of MortgageBankingGainsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:OccupancyAndEquipmentExpense

ebsb:OccupancyAndEquipmentExpense


Occupancy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3.94.2313.8333.7343.7393.9243.6913.6573.653.5963.2142.9813.0253.5392.7982.6763.0363.0232.8812.5772.8672.4842.4822.4062.3682.622.2292.2522.2162.561
Percentage of OccupancyAndEquipmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:PercentageOfLoanPortfolio

ebsb:PercentageOfLoanPortfolio


Percentage
Period End2021-06-302021-03-31
Value-2.27.6
Percentage of PercentageOfLoanPortfolio100.0100.0

ebsb:ProceedsFromFederalReserveLoanBankBorrowings us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

ebsb:ProceedsFromFederalReserveLoanBankBorrowings

ebsb:PaycheckProtectionProgramLiquidityFacility


Proceeds
Period End2020-12-312020-09-30
Value0.00.184
Percentage of ProceedsFromFederalReserveLoanBankBorrowings0.0100.0

ebsb:ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquityAvailableForSaleSecurities

ebsb:ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquityAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.6730.6930.820.8070.8961.4730.6740.7870.5630.5120.5650.7550.9410.6890.3055.465
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfDebtAndEquityAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:ProceedsFromStockOptionsExercisedNetOfIncomeTaxesPaid

ebsb:ProceedsFromStockOptionsExercisedNetOfIncomeTaxesPaid


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value713000.092000.08000.027000.03000.051000.0-56000.0-36000.023000.0128000.0-1075000.0-1852000.011000.0275000.0182000.0
Percentage of ProceedsFromStockOptionsExercisedNetOfIncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:ProvisionForCreditAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates

ebsb:ProvisionForCreditAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates


Provision
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8927000.07163000.09641000.0725000.0-504000.0-2978000.078000.0843000.0
Percentage of ProvisionForCreditAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value7.1639.6410.725-0.504-2.9780.0780.8433.5630.2261.872.189-0.7152.4581.4971.6191.3040.8583.9521.0660.5442.4123.6510.061.8290.655
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.9211.2960.3980.105-0.580.0710.1270.317-0.4480.389-0.106-0.795-0.0520.4210.0280.136-0.4820.2840.8830.3340.1040.3310.2530.2250.293
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates12.913.454.9-20.819.591.015.18.9-198.220.8-4.8111.2-2.128.11.710.4-56.27.282.861.44.39.1421.712.344.7

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value5.6734.941-0.215-0.463-0.38-0.4130.4091.9440.5431.4152.355-0.7381.3431.4570.4161.4750.31.8670.5860.0611.62-0.144-0.0580.5360.557
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates79.251.2-29.791.912.8-529.548.554.6240.375.7107.6103.254.697.325.7113.135.047.255.011.267.2-3.9-96.729.385.0

us-gaap:ConsumerPortfolioSegment


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.039-0.0340.0160.0290.0590.0330.0460.040.0580.0410.0510.0250.0750.0440.0840.0390.0430.0610.0430.0010.1080.0560.0290.0560.022
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates0.5-0.42.2-5.8-2.042.35.51.125.72.22.3-3.53.12.95.23.05.01.54.00.24.51.548.33.13.4

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.1010.0840.0240.008-0.0070.004-0.010.0010.0-0.001-0.001-0.009-0.0130.011-0.013-0.006-0.004-0.0480.057-0.0050.057-0.0050.001-0.006
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates1.40.93.3-1.60.25.1-1.20.40.0-0.00.1-0.4-0.90.7-1.0-0.7-0.1-4.510.5-0.21.6-8.30.1-0.9

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.7640.7230.1030.058-0.202-0.062-0.136-0.065-0.0010.023-0.076-0.039-0.1-0.188-0.045-0.0940.141-0.0650.031-0.166-0.1-0.139-0.041-0.024-0.063
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates10.77.514.2-11.56.8-79.5-16.1-1.8-0.41.2-3.55.5-4.1-12.6-2.8-7.216.4-1.62.9-30.5-4.1-3.8-68.3-1.3-9.6

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-0.8961.8340.5440.377-1.7180.2340.2650.956-0.392-0.417-0.760.0751.245-1.0680.935-0.4490.561.294-0.5310.1470.9323.576-0.0910.659-0.061
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates-12.519.075.0-74.857.7300.031.426.8-173.5-22.3-34.7-10.550.7-71.357.8-34.465.332.7-49.827.038.697.9-151.736.0-9.3

ebsb:ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.5610.797-0.145-0.618-0.150.2110.1420.3670.4650.4190.7260.758-0.0440.844
Percentage of ProvisionForLoanAndLeaseLossesAndAdjustmentsToPriorPeriodEstimates7.88.3-20.0122.65.0270.516.810.3205.822.433.2-106.0-1.856.4

ebsb:RepaymentOfFederalReserveLoanBankBorrowings us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

ebsb:RepaymentOfFederalReserveLoanBankBorrowings

ebsb:PaycheckProtectionProgramLiquidityFacility


Repayment
Period End2021-06-302021-03-312020-12-31
Value0.09726
Percentage of RepaymentOfFederalReserveLoanBankBorrowings0.0100.0100.0

ebsb:ShareBasedCompensationExcludingEmployeeStockOwnershipPlanCompensationExpense

ebsb:ShareBasedCompensationExcludingEmployeeStockOwnershipPlanCompensationExpense


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value437000.0372000.0710000.0961000.0959000.01020000.01274000.01109000.01100000.01088000.01200000.0
Percentage of ShareBasedCompensationExcludingEmployeeStockOwnershipPlanCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-14000.0-15000.0-20000.0-18000.0-16000.0-13000.0-11000.0-14000.0-11000.0-16000.0-11000.0-13000.0-13000.0-6000.010000.01000.02000.012000.016000.017000.09000.016000.016000.023000.014000.011000.08000.01000.09000.01000.0-10000.015000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts


Allowance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value9000.059000.013000.079000.018000.036000.010000.0140000.048000.0122000.0194000.0431000.055000.045000.087000.0249000.080000.045000.027000.0456000.0140000.0208000.0319000.0102000.0100000.036000.088000.0163000.0653000.029000.076000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Allowance
Period End2020-09-302020-06-302020-03-312017-12-312017-09-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value3000.05000.01000.0030000.0052000.08000.0001000.01000.01000.03000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts33.38.57.70.054.50.065.017.80.00.00.51.01.08.3

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


Allowance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5000.041000.011000.071000.017000.030000.09000.052000.019000.048000.013000.049000.024000.036000.012000.040000.021000.030000.020000.032000.033000.023000.019000.012000.019000.018000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts55.669.584.689.994.483.390.037.139.639.36.711.443.680.013.816.126.266.774.17.023.611.16.011.819.050.0

us-gaap:AllowanceForLoanAndLeaseLossRecoveryOfBadDebts us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Allowance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1000.001000.01000.01000.01000.01000.01000.01000.01000.01000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts11.10.07.71.35.62.810.00.72.10.80.5

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Allowance
Period End2020-09-302020-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value013000.083000.0068000.071000.003000.030000.0108000.0008000.0023000.05000.0
Percentage of AllowanceForLoanAndLeaseLossRecoveryOfBadDebts0.022.059.30.055.716.50.06.734.523.70.00.02.50.023.013.9

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs


Allowance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value80000.099000.0114000.084000.074000.0246000.087000.081000.066000.079000.080000.0174000.099000.077000.091000.0101000.0558000.070000.0108000.0180000.076000.02351000.0247000.0201000.0147000.041000.0116000.0347000.0575000.0681000.0957000.0
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Allowance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value25000.083000.050000.05000.00186000.010000.05000.00044000.03000.00033000.0
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs31.283.843.96.00.075.611.55.00.00.040.71.70.00.013.4

us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


Allowance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value55000.016000.064000.079000.074000.060000.077000.081000.066000.079000.080000.075000.099000.075000.091000.096000.072000.070000.064000.0118000.070000.057000.061000.061000.040000.036000.0
Percentage of AllowanceForLoanAndLeaseLossesWriteOffs68.816.256.194.0100.024.488.5100.0100.0100.0100.043.1100.097.4100.095.012.9100.059.365.692.12.424.730.327.287.8

us-gaap:AmortizationOfDeferredLoanOriginationFeesNet

us-gaap:AmortizationOfDeferredLoanOriginationFeesNet


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1158000.01664000.01256000.0752000.0741000.0959000.0617000.0786000.0546000.0454000.0402000.0379000.0463000.0316000.0825000.0434000.0262000.0217000.0486000.0293000.0205000.0289000.0271000.0369000.0221000.0150000.0207000.0170000.0146000.085000.0122000.012000.069000.0-31000.0
Percentage of AmortizationOfDeferredLoanOriginationFeesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfESOPAward

us-gaap:AmortizationOfESOPAward


Amortization
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value512000.0346000.0338000.0507000.0554000.0520000.0479000.0477000.0555000.0594000.0625000.0603000.0531000.0527000.0571000.0520000.0465000.0443000.0414000.0433000.0397000.0395000.0370000.02221000.0-372000.0-261000.0-253000.01396000.0-209000.0-188000.0-185000.0
Percentage of AmortizationOfESOPAward100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfESOPAward us-gaap:StatementEquityComponents

ebsb:UnearnedCompensationESOP


Amortization
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value220000.0221000.0221000.0220000.0221000.0220000.0221000.0220000.0221000.0220000.0220000.0221000.0220000.0221000.0220000.0221000.0220000.0221000.0220000.0221000.0220000.0221000.0220000.0384000.0
Percentage of AmortizationOfESOPAward43.063.965.443.439.942.346.146.139.837.035.236.741.441.938.542.547.349.953.151.055.455.959.517.3

us-gaap:AdditionalPaidInCapital


Amortization
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value292000.0125000.0117000.0287000.0333000.0300000.0258000.0257000.0334000.0374000.0405000.0382000.0311000.0306000.0351000.0299000.0245000.0222000.0194000.0212000.0177000.0174000.0150000.0841000.0-81000.0-157000.0-150000.0671000.0-105000.0-85000.0-81000.0
Percentage of AmortizationOfESOPAward57.036.134.656.660.157.753.953.960.263.064.863.358.658.161.557.552.750.146.949.044.644.140.537.921.860.259.348.150.245.243.8

us-gaap:BankOwnedLifeInsuranceIncome

us-gaap:BankOwnedLifeInsuranceIncome


Bank
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value264000.0261000.0271000.0272000.0273000.0297000.0281000.0285000.0280000.0281000.0281000.0279000.0277000.0272000.0284000.0294000.0292000.0288000.0294000.0296000.0296000.0302000.0295000.0340000.0294000.0296000.0297000.0294000.0293000.0281000.0309000.0299000.0296000.0291000.0
Percentage of BankOwnedLifeInsuranceIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:BusinessCombinationAcquisitionRelatedCosts


Business
Period End2021-06-302018-12-312018-09-302018-06-302017-12-312017-09-30
Value1115000.0026000.014000.01784000.0271000.0
Percentage of BusinessCombinationAcquisitionRelatedCosts100.00.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value895000.0919000.0929000.0868000.0851000.0841000.0827000.0810000.0795000.0765000.0716000.0685000.0709000.0776000.0736000.0753000.0786000.0794000.0780000.0762000.0750000.0712000.0678000.0644000.0607000.0595000.0591000.0604000.0597000.0593000.0585000.0589000.0564000.0553000.0
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendIncomeOperating

us-gaap:DividendIncomeOperating


Dividend
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value90000.0124000.0158000.0118000.0145000.094000.0109000.0137000.0142000.0105000.0121000.0101000.0134000.0148000.0223000.0275000.0291000.0277000.0346000.0365000.0418000.0400000.0422000.0408000.0421000.0387000.0378000.0357000.0377000.0313000.0322000.0348000.0364000.0349000.0
Percentage of DividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5.0395.0244.0084.0084.0073.5593.5633.5693.5622.5812.5672.5762.5672.0542.0192.0621.5281.5271.5261.5331.474
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5.0395.0244.0084.0084.0073.5593.5633.5693.5622.5812.5672.5762.5672.0542.0192.0621.5281.5271.5261.5331.474
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense

us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense


Employee
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value512000.0404000.0346000.0338000.0507000.0598000.0554000.0520000.0479000.0477000.0
Percentage of EmployeeStockOwnershipPlanESOPCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value200000.01785000.02853000.0122000.02025000.0-4344000.0930000.0-463000.0223000.01326000.0-2698000.0781000.0388000.0-537000.0
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value0972000.01810000.070000.00-337000.000-155000.00399000.0
Percentage of EquitySecuritiesFvNiRealizedGainLoss0.0100.0100.0100.00.0100.00.00.0100.00.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value200000.0813000.01043000.052000.02025000.0-4007000.0930000.0-463000.0378000.01326000.0-2698000.0382000.0388000.0-691000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value345000.0513000.0404000.0692000.0606000.0669000.0255000.010000.0929000.01012000.0576000.0851000.0782000.0797000.0824000.0660000.0813000.0691000.0481000.0572000.0532000.0452000.0527000.0522000.0479000.0461000.0534000.0515000.0531000.0551000.0531000.0525000.0522000.0475000.0
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


Financing
Period End2021-06-302021-03-312020-06-302020-03-31
Value188000.039000.059000.013000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2021-06-302021-03-312020-06-302020-03-31
Value1000.015000.05000.01000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.538.58.57.7

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-06-302020-03-31
Value12000.024000.041000.011000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery6.461.569.584.6

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Financing
Period End2021-06-302020-06-302020-03-31
Value2000.001000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery1.10.07.7

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2021-06-302020-06-30
Value73000.013000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery38.822.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2021-06-30
Value100000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery53.2

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
Period End2021-06-302021-03-312020-06-302020-03-31
Value73000.0191000.099000.0114000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2021-06-302021-03-312020-06-302020-03-31
Value50000.089000.083000.050000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs68.546.683.843.9

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-06-302020-03-31
Value23000.034000.016000.064000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs31.517.816.256.1

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2021-06-302021-03-31
Value068000.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.035.6

us-gaap:GainsLossesOnSalesOfAssets

us-gaap:GainsLossesOnSalesOfAssets


Gains
Period End2020-12-312020-09-302020-06-30
Value004195000.0
Percentage of GainsLossesOnSalesOfAssets0.00.0100.0

us-gaap:ImpairedFinancingReceivableAverageRecordedInvestment

us-gaap:ImpairedFinancingReceivableAverageRecordedInvestment


Impaired
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value2.735.3715.8446.0143.8464.5185.2395.0644.9825.0637.2587.4658.4992123232732302833333637
Percentage of ImpairedFinancingReceivableAverageRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableAverageRecordedInvestment us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Impaired
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value1.9672.4512.4952.5391.1351.3511.4811.6071.4861.5251.61.6381.7891.9411.980.7571.110.9961.0541.0971.051
Percentage of ImpairedFinancingReceivableAverageRecordedInvestment72.145.642.742.229.529.928.331.729.830.122.021.921.08.98.63.34.03.13.43.93.1

us-gaap:ImpairedFinancingReceivableAverageRecordedInvestment us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Impaired
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value2.7271.9282.1361.9630.7420.7581.0840.8070.8240.8392.5472.7622.82.9653.9373.6734.9915.5581513
Percentage of ImpairedFinancingReceivableAverageRecordedInvestment99.935.936.632.619.316.820.715.916.516.635.137.032.913.617.115.818.217.149.947.6

us-gaap:ImpairedFinancingReceivableAverageRecordedInvestment us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:OneToFourFamily


Impaired
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value0.7630.9921.2131.5121.2861.2971.1551.3641.3741.391.6071.551.5691.8431.6991.8752.1792.2824.1094.1694.0334.094.4844.688
Percentage of ImpairedFinancingReceivableAverageRecordedInvestment27.918.520.825.133.428.722.026.927.627.522.120.818.58.57.48.17.97.013.414.711.912.012.412.4

us-gaap:ImpairedFinancingReceivableInterestIncomeAccrualMethod

us-gaap:ImpairedFinancingReceivableInterestIncomeAccrualMethod


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value134000.035000.035000.052000.051000.061000.0176000.052000.054000.051000.044000.056000.049000.052000.064000.059000.071000.060000.059000.077000.071000.093000.0170000.090000.0144000.0278000.0478000.0339000.0508000.0531000.0-997000.0599000.0634000.0
Percentage of ImpairedFinancingReceivableInterestIncomeAccrualMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableInterestIncomeAccrualMethod us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-21000.025000.020000.022000.017000.026000.066000.016000.016000.017000.018000.022000.014000.014000.015000.016000.016000.016000.017000.018000.018000.013000.0-3000.03000.02000.03000.0-36000.023000.020000.0
Percentage of ImpairedFinancingReceivableInterestIncomeAccrualMethod-15.771.457.142.333.342.637.530.829.633.340.939.328.626.923.427.122.526.728.823.425.414.0-1.83.31.41.1-7.56.83.9

us-gaap:ImpairedFinancingReceivableInterestIncomeAccrualMethod us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value80000.081000.08000.022000.021000.021000.082000.08000.09000.08000.0-3000.09000.09000.010000.010000.010000.024000.010000.08000.019000.014000.038000.0119000.019000.033000.0107000.0226000.0129000.0
Percentage of ImpairedFinancingReceivableInterestIncomeAccrualMethod59.7231.422.942.341.234.446.615.416.715.7-6.816.118.419.215.616.933.816.713.624.719.740.970.021.122.938.547.338.1

us-gaap:ImpairedFinancingReceivableInterestIncomeAccrualMethod us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:OneToFourFamily


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-6000.010000.07000.08000.013000.014000.020000.018000.013000.08000.013000.012000.013000.015000.026000.018000.016000.019000.014000.018000.016000.020000.014000.021000.035000.049000.096000.054000.050000.053000.0-104000.054000.059000.0
Percentage of ImpairedFinancingReceivableInterestIncomeAccrualMethod-4.528.620.015.425.523.011.434.624.115.729.521.426.528.840.630.522.531.723.723.422.521.58.223.324.317.620.115.99.810.010.49.09.3

us-gaap:ImpairedFinancingReceivableInterestIncomeCashBasisMethod

us-gaap:ImpairedFinancingReceivableInterestIncomeCashBasisMethod


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-16000.024000.017000.06000.06000.08000.014000.08000.012000.07000.09000.022000.014000.017000.012000.025000.035000.024000.020000.036000.030000.070000.0-154000.090000.0143000.0267000.0129000.0257000.0257000.0267000.0-518000.0277000.0391000.0
Percentage of ImpairedFinancingReceivableInterestIncomeCashBasisMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ImpairedFinancingReceivableInterestIncomeCashBasisMethod us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Impaired
Period End2021-06-302021-03-312018-12-312018-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-11000.015000.03000.08000.000013000.0-3000.03000.02000.03000.03000.07000.03000.0
Percentage of ImpairedFinancingReceivableInterestIncomeCashBasisMethod68.862.533.336.40.00.00.018.61.93.31.41.12.32.71.2

us-gaap:ImpairedFinancingReceivableInterestIncomeCashBasisMethod us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:OneToFourFamily


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-5000.09000.04000.06000.06000.08000.014000.08000.08000.03000.02000.010000.010000.012000.024000.013000.011000.014000.09000.013000.010000.015000.0-33000.021000.034000.049000.0-41000.049000.055000.043000.0-86000.042000.046000.0
Percentage of ImpairedFinancingReceivableInterestIncomeCashBasisMethod31.237.523.5100.0100.0100.0100.0100.066.742.922.245.571.470.6200.052.031.458.345.036.133.321.421.423.323.818.4-31.819.121.416.116.615.211.8

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-2566000.0-675000.01713000.04160000.03432000.0-613000.0176000.0-1131000.0457000.0712000.0858000.0710000.0418000.0-621000.01046000.0512000.0998000.0-311000.01172000.0-37000.0415000.0257000.0335000.0185000.0509000.0-203000.0745000.0-115000.0110000.0-119000.0242000.046000.032000.062000.0
Percentage of IncreaseDecreaseInAccruedInterestReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4625000.0-5078000.0-150000.02861000.0-1304000.01168000.0148000.05011000.04632000.0-1885000.0-2050000.02456000.0-1456000.01403000.01608000.02706000.0-4300000.0184000.03375000.03117000.060000.0-2094000.02694000.0432000.0-398000.0-2648000.01846000.03287000.0-1523000.0-2448000.04353000.0-326000.01520000.0-1237000.0
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-233.63816129131-1.548-99.579-34.164-62.597-4.7021384722120081682853.2881802462318616811279-43.11490100-160.885246684314310492
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLoansHeldForSale

us-gaap:IncreaseDecreaseInLoansHeldForSale


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-1.711-0.802-3.4387.980.2790.9480.627-0.2771.1160.58-0.434-0.209-0.084-2.636-2.0511.451.235-2.9221.090.4571.203-3.4752.367-2.852-0.664.843-1.025-3.9044.692-1.155-3.931-3.8940.575-4.889
Percentage of IncreaseDecreaseInLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10-6.614-13.55113-2.3769.0522.5612.1686.537-1.037-6.6042.686.997-1.086-6.193.5741.3360.809-3.817-2.0014.9470.692-0.511-0.8961.575-3.1520.566-1.131.0170.182-0.61-1.9752.2620.308
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InformationTechnologyAndDataProcessing


Information
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2273000.02241000.02205000.02196000.02133000.02137000.02074000.02026000.02009000.01970000.01832000.01747000.01653000.01683000.01531000.01528000.01474000.01379000.01331000.01293000.01254000.01257000.01317000.01375000.01249000.01263000.01245000.01201000.0909000.01161000.01115000.01089000.01079000.0991000.0
Percentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value55576261626666686664615855515047444141383534323129292827262525242322
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseDeposits


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4.2095.7296.8838.74610161820201917141210108.5287.9357.4196.9626.2735.6615.2284.84.6434.3594.6774.7164.5134.4074.4054.5374.4274.1413.948
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseShortTermBorrowings


Interest
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312017-12-312017-09-302017-06-302016-12-312016-09-30
Value52000.052000.08000.01000.00295000.0004000.000
Percentage of InterestExpenseShortTermBorrowings100.0100.0100.0100.00.0100.00.00.0100.00.00.0

us-gaap:InterestIncomeAndFeesBankersAcceptancesCertificatesOfDepositAndCommercialPaper

us-gaap:InterestIncomeAndFeesBankersAcceptancesCertificatesOfDepositAndCommercialPaper


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0001000.01000.018000.028000.027000.082000.0104000.0141000.0203000.0185000.0221000.0196000.0212000.0115000.075000.0135000.0170000.0168000.0163000.0157000.0136000.0
Percentage of InterestIncomeAndFeesBankersAcceptancesCertificatesOfDepositAndCommercialPaper0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDebtSecuritiesOperating

us-gaap:InterestIncomeDebtSecuritiesOperating


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value61000.065000.087000.0100000.0
Percentage of InterestIncomeDebtSecuritiesOperating100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value47534241374444474241384139374035333132302527262321242122202018181516
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxExempt


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value13000.012000.013000.013000.012000.013000.013000.013000.013000.015000.015000.014000.008000.010000.019000.030000.032000.033000.038000.041000.041000.042000.044000.045000.044000.045000.050000.053000.053000.053000.0
Percentage of InterestIncomeSecuritiesTaxExempt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:InterestIncomeSecuritiesTaxable


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value63000.075000.087000.096000.0101000.0108000.0110000.0115000.0115000.0126000.0126000.042000.058000.083000.0119000.0159000.0203000.0238000.0266000.0297000.0366000.0434000.0511000.0505000.0588000.0630000.0745000.0812000.0944000.01007000.01156000.0
Percentage of InterestIncomeSecuritiesTaxable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value13151413131515151415141414151312121312121112111110111010101010109.47610
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value28252422232625232525232323242320212119191919191817181716161717151516
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.054.9315.8673.5728.658-0.8313.6822.8492.9543.8280.1353.6772.8582.3338.7095.2535.034.0725.6143.3012.5832.6922.6742.7974.2193.354.3483.6874.0373.9845.1015.2344.724.361
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:NoninterestIncomeOtherOperatingIncome


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value17000.09000.082000.017000.010000.034000.012000.012000.09000.07000.05000.006000.055000.02000.01000.02000.007000.001000.01000.006000.011000.0356000.009000.0
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-20000.0-102000.0-18000.0-13000.0113000.0230000.0-38000.0100000.0194000.0256000.0225000.0-156000.0-117000.0-381000.0-4080000.01202000.0-212000.0384000.01184000.01515000.02429000.01316000.02033000.0-6252000.0-2214000.0-1981000.07000.0-4036000.02214000.06000.01000000.0-872000.0-4531000.02756000.0
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-5000.0-29000.0-4000.0-4000.032000.064000.0-10000.028000.054000.072000.064000.0-43000.0-38000.0-136000.0-1710000.0485000.0-83000.0156000.0458000.0570000.0980000.0574000.0864000.0-2530000.0-871000.0-790000.0-16000.0-1603000.0858000.0-19000.0
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-15000.0-73000.0-149000.0-9000.081000.0166000.0-195000.072000.0140000.0184000.0464000.0-113000.0-79000.0-245000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherInterestAndDividendIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value361000.0370000.0514000.0494000.0473000.01786000.01811000.02136000.01943000.02577000.01957000.01932000.01527000.01522000.01265000.0819000.0736000.0645000.0438000.0303000.0188000.0218000.0159000.0207000.0188000.0170000.0261000.0258000.0138000.090000.093000.086000.0101000.064000.0
Percentage of OtherInterestAndDividendIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4738000.01416000.01189000.01540000.01240000.01449000.01512000.01354000.01530000.01564000.01380000.01501000.01547000.01270000.01236000.01367000.01271000.01120000.01004000.01069000.01240000.01190000.01322000.01045000.0960000.0976000.01184000.01180000.01062000.0888000.01144000.0876000.0997000.01019000.0
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-287.791-226.673-139.986-64.06123-57.898-1.18-71.4955611537011021627945249236123238155302163153178672.0491691125353154
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock


Payments
Period End2020-09-302020-06-302020-03-312019-09-302018-09-30
Value04000.04331000.01478000.01554000.0
Percentage of PaymentsToAcquireFederalHomeLoanBankStock0.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.0111.4122.4630.01.2472.772
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.00.0100.0100.0

us-gaap:ProceedsFromFederalHomeLoanBankBorrowings

us-gaap:ProceedsFromFederalHomeLoanBankBorrowings


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.00.00.01350.0400.02018512060551456010.00.0120900.02.13110.0450.00.01730
Percentage of ProceedsFromFederalHomeLoanBankBorrowings0.00.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:ProceedsFromLifeInsurancePolicies

us-gaap:ProceedsFromLifeInsurancePolicies


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value000391000.00
Percentage of ProceedsFromLifeInsurancePolicies0.00.00.0100.00.0

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-30
Value0.06.4849.3290.3210.00.5410.00.00.00.906
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities0.0100.0100.0100.00.0100.00.00.00.0100.0

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock


Proceeds
Period End2021-06-302021-03-31
Value2263000.02211000.0
Percentage of ProceedsFromSaleOfFederalHomeLoanBankStock100.0100.0

us-gaap:ProfessionalFees

us-gaap:ProfessionalFees


Professional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value691000.0730000.0594000.0688000.0695000.0997000.0858000.0680000.0784000.0860000.0735000.0683000.01000000.0965000.0804000.0624000.01106000.01135000.0969000.0663000.0720000.0613000.0652000.0644000.0664000.0673000.0581000.0588000.0659000.0641000.0717000.0453000.0537000.0601000.0
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.749-5.2369.6410.725
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.2570.0881.2960.398
Percentage of ProvisionForLoanLossesExpensed-34.3-1.713.454.9

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.871-0.7124.941-0.215
Percentage of ProvisionForLoanLossesExpensed116.313.651.2-29.7

us-gaap:ConsumerPortfolioSegment


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.002-0.041-0.0340.016
Percentage of ProvisionForLoanLossesExpensed0.30.8-0.42.2

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.03-0.040.0840.024
Percentage of ProvisionForLoanLossesExpensed-4.00.80.93.3

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.239-0.3910.7230.103
Percentage of ProvisionForLoanLossesExpensed-31.97.57.514.2

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.607-3.6111.8340.544
Percentage of ProvisionForLoanLossesExpensed81.069.019.075.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.205-0.5290.797-0.145
Percentage of ProvisionForLoanLossesExpensed-27.410.18.3-20.0

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.050700.065250.373.4734510730.88817550251745487.3080.8041025100.7943.293270.788400.7834.78250.775154.431
Percentage of RepaymentsOfFederalHomeLoanBankBorrowings0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value297000.0235000.0617000.0597000.0640000.0695000.0689000.0681000.0728000.0698000.0696000.0716000.0764000.0646000.0496000.0489000.0551000.0496000.0527000.0530000.0401000.0128000.0128000.074000.0-154000.0-272000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value296000.0235000.0617000.0597000.0640000.0695000.0689000.0681000.0728000.0698000.0696000.0716000.0764000.0644000.0496000.0489000.0551000.0496000.0527000.0530000.0395000.0128000.0128000.073000.0147000.0196000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures99.7100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.7100.0100.0100.0100.0100.0100.098.5100.0100.098.6-95.5-72.1

us-gaap:CommonStock


Stock
Period End2021-06-302017-12-312015-12-312015-09-302015-06-302015-03-31
Value1000.006000.0001000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures0.30.01.50.00.01.4

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value140000.0137000.0344000.0362000.0380000.0414000.0411000.0407000.0472000.0413000.0407000.0415000.0486000.0367000.0281000.0275000.0359000.0279000.0296000.0297000.0-112000.0181000.0183000.0105000.0146000.0212000.0210000.0224000.0333000.0299000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value140000.0137000.0344000.0362000.0380000.0414000.0411000.0407000.0472000.0413000.0407000.0415000.0486000.0367000.0281000.0275000.0359000.0279000.0296000.0297000.039000.0127000.0128000.063000.084000.0113000.0112000.0120000.0175000.0153000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-34.870.269.960.057.553.353.353.652.651.2

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value713000.092000.027000.03000.051000.095000.023000.0199000.0166000.0179000.011000.0275000.0182000.0135000.048000.0136000.0053000.0145000.07000.070000.039000.066000.057000.012000.08000.0049000.01000.0029000.05000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value712000.092000.027000.03000.051000.094000.023000.0198000.0163000.0175000.010000.0274000.0181000.0135000.047000.0136000.0053000.0145000.07000.070000.039000.065000.056000.012000.08000.00-101000.0-3000.0-10000.0-21000.0-41000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised99.9100.0100.0100.0100.098.9100.099.598.297.890.999.699.5100.097.9100.00.0100.0100.0100.0100.0100.098.598.2100.0100.00.0-206.1-300.00.0-72.4-820.0

us-gaap:CommonStock


Stock
Period End2021-06-302019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302015-12-312015-09-302015-06-302015-03-31
Value1000.01000.01000.03000.04000.01000.01000.01000.00001000.01000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised0.11.10.51.82.29.10.40.50.00.00.01.51.8

ebsb:AccruedCostsForSupplementalRetirementPlan

ebsb:AccruedCostsForSupplementalRetirementPlan


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value8200000.07300000.07100000.06700000.06400000.06200000.04900000.04500000.0
Percentage of AccruedCostsForSupplementalRetirementPlan100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:AccruedInterestPayableAtFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

ebsb:AccruedInterestPayableAtFairValue

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1872000.01864000.02832000.02686000.03178000.04526000.05962000.04995000.04581000.02781000.03388000.02025000.0
Percentage of AccruedInterestPayableAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:AccruedInterestPayableAtFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1872000.01864000.02832000.02686000.03178000.04526000.05962000.04995000.04581000.02781000.03388000.02025000.0
Percentage of AccruedInterestPayableAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1872000.01864000.02832000.02686000.03178000.04526000.05962000.04995000.04581000.02781000.03388000.02025000.0
Percentage of AccruedInterestPayableAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleAdjustmentTax

ebsb:AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleAdjustmentTax


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value178000.090000.0-54000.0292000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleAdjustmentTax100.0100.0100.0100.0

ebsb:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTax

ebsb:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTax


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value136000.0100000.055000.0202000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanTax100.0100.0100.0100.0

ebsb:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue

ebsb:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value8.99.54410111212141415161617188.195204.7564.9415.2456.4067.0119.5329.9171013131921344646
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.6660.6710.6830.6920.6960.7010.6760.7230.7250.7130.7110.7030.718
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue7.57.06.66.25.75.64.84.94.74.54.24.14.0

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6.2696.8747.598.3589.2149.82710101111121213
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue70.472.073.775.375.478.671.171.871.572.672.973.674.6

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.3260.3630.3670.3970.3910.6281.5561.6081.8511.871.8321.8191.848
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue3.73.83.63.63.25.011.010.811.911.710.910.610.2

ebsb:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.6391.6361.6531.651.9131.3521.8661.8651.8481.8122.0312.012.0272.0452.098
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveYearsFairValue18.417.116.114.915.710.813.112.611.911.312.011.711.225.010.4

ebsb:BankOwnedLifeInsuranceLiability

ebsb:BankOwnedLifeInsuranceLiability


Bank
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7900000.07300000.06900000.06400000.06000000.0
Percentage of BankOwnedLifeInsuranceLiability100.0100.0100.0100.0100.0

ebsb:CommonEquityTierOneLeverageCapital

ebsb:CommonEquityTierOneLeverageCapital


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value746704651624591573
Percentage of CommonEquityTierOneLeverageCapital100.0100.0100.0100.0100.0100.0

ebsb:CommonEquityTierOneLeverageCapital dei:LegalEntity

ebsb:Bank


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value719661572510452409
Percentage of CommonEquityTierOneLeverageCapital96.393.987.881.876.471.5

ebsb:CoreDepositIntangibleAsset

ebsb:CoreDepositIntangibleAsset


Core
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1445000.01548000.01651000.01769000.01887000.02005000.02123000.02254000.02385000.02517000.02653000.02801000.02948000.03096000.03243000.0
Percentage of CoreDepositIntangibleAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value64636850
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance100.0100.0100.0100.0

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value8.1618.4678.4535.765
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance12.713.312.311.5

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value30293026
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance47.146.443.853.5

us-gaap:ConsumerPortfolioSegment


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value0.4360.4450.4960.116
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance0.70.70.70.2

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value0.1380.1660.2060.069
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance0.20.30.30.1

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value1.4511.6172.0760.691
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance2.32.53.01.4

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value2221258.913
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance34.734.036.617.7

ebsb:DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Deemed
Period End2021-06-302021-03-312020-12-312019-12-31
Value1.5171.7222.2517.825
Percentage of DeemedToBeImpairedAndNotDeemedToBeImpairedFinancingReceivableRelatedAllowance2.42.73.315.5

ebsb:DeferredTaxAssetsAcquisitionCosts

ebsb:DeferredTaxAssetsAcquisitionCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value265000.0599000.0392000.01378000.02135000.02163000.02241000.02362000.0
Percentage of DeferredTaxAssetsAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DeferredTaxAssetsNonaccrualInterest

ebsb:DeferredTaxAssetsNonaccrualInterest


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value108000.0108000.082000.082000.01091000.01091000.0949000.0734000.0
Percentage of DeferredTaxAssetsNonaccrualInterest100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DeferredTaxLiabilityDepreciationAndAmortization

ebsb:DeferredTaxLiabilityDepreciationAndAmortization


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2269000.01060000.0752000.0945000.01289000.01232000.01224000.0902000.0
Percentage of DeferredTaxLiabilityDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DepositsOtherThanTimeDeposits

ebsb:DepositsOtherThanTimeDeposits


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value3801393638613701358934313351331533293358319828142819278027372652253025162347212319381926185418251840190917951742188316381572
Percentage of DepositsOtherThanTimeDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DisallowedGoodwill

ebsb:DisallowedGoodwill


Disallowed
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2020201913131313
Percentage of DisallowedGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DisallowedGoodwill dei:LegalEntity

ebsb:Bank


Disallowed
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2020201913131313
Percentage of DisallowedGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:DividendPaymentReserveBalance

ebsb:DividendPaymentReserveBalance


Dividend
Period End2020-12-31
Value188
Percentage of DividendPaymentReserveBalance100.0

ebsb:ESOPLoanReceivable us-gaap:ConsolidatedEntities

ebsb:ESOPLoanReceivable

srt:ParentCompany


E
Period End2020-12-312019-12-312018-12-312017-12-31
Value18181920
Percentage of ESOPLoanReceivable100.0100.0100.0100.0

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Employee
Period End2020-12-31
Value14
Percentage of EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Employee
Period End2020-12-31
Value758000.0
Percentage of EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFive

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFive


Employee
Period End2020-12-31
Value861000.0
Percentage of EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFour

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFour


Employee
Period End2020-12-31
Value834000.0
Percentage of EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearThree

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearThree


Employee
Period End2020-12-31
Value808000.0
Percentage of EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearTwo

ebsb:EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Employee
Period End2020-12-31
Value783000.0
Percentage of EmployeeStockOwnershipPlanESOPDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

ebsb:EmployeeStockOwnershipPlanESOPNumberOfSharesPaidOutToParticipants

ebsb:EmployeeStockOwnershipPlanESOPNumberOfSharesPaidOutToParticipants


Employee
Period End2020-12-312019-12-312018-12-312017-12-31
Value-253000.0-216000.0-191000.0-137000.0
Percentage of EmployeeStockOwnershipPlanESOPNumberOfSharesPaidOutToParticipants100.0100.0100.0100.0

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateAfterSixYearsFromBalanceSheetDate us-gaap:VariableRate

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateAfterSixYearsFromBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value1.211.211.211.210.01210.01210.01210.01210.01210.01210.01360.01360.01360.01110.01210.0101
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateAfterSixYearsFromBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFiveToSixYearsFromBalanceSheetDate us-gaap:VariableRate

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFiveToSixYearsFromBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2020-12-312020-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1.01.00.0250.0250.0250.02210.01790.01720.01750.02210.0146
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFiveToSixYearsFromBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterSixYearsOfBalanceSheetDate us-gaap:VariableRate

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterSixYearsOfBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value10.010.010.010.010.010.010.010.010.010.02020209010050
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterSixYearsOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFiveToSixYearsOfBalanceSheetDate us-gaap:VariableRate

ebsb:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFiveToSixYearsOfBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2020-12-312020-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value85857575753010580601545
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFiveToSixYearsOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FederalIncomeTaxReserveForCreditLosses

ebsb:FederalIncomeTaxReserveForCreditLosses


Federal
Period End2020-12-31
Value9800000.0
Percentage of FederalIncomeTaxReserveForCreditLosses100.0

ebsb:FederalReserveBankRemainingBorrowingCapacity

ebsb:FederalReserveBankRemainingBorrowingCapacity


Federal
Period End2020-12-31
Value276000.0
Percentage of FederalReserveBankRemainingBorrowingCapacity100.0

ebsb:FinancingReceivableCreditQualityRating us-gaap:EquitySecuritiesByIndustry

ebsb:FinancingReceivableCreditQualityRating

us-gaap:CommercialAndIndustrialSector


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value703779765766760638604594627622625585568533525561557524515501500477400365354330
Percentage of FinancingReceivableCreditQualityRating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FinancingReceivableCreditQualityRating us-gaap:EquitySecuritiesByIndustry, us-gaap:InternalCreditAssessment

us-gaap:CommercialAndIndustrialSector, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value648722704725719592573558589585587557538479471509465
Percentage of FinancingReceivableCreditQualityRating92.292.792.194.694.692.894.993.994.094.194.095.394.789.989.890.890.4

us-gaap:CommercialAndIndustrialSector, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value3436371816162.00910109.982104.0564.7526.5966.382522
Percentage of FinancingReceivableCreditQualityRating4.84.74.82.42.22.60.31.71.71.61.60.70.81.21.24.64.4

us-gaap:CommercialAndIndustrialSector, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value2020232324292926262627232547472626
Percentage of FinancingReceivableCreditQualityRating2.92.73.13.03.34.64.84.44.34.34.44.04.58.89.04.75.2

ebsb:FinancingReceivableCreditQualityRating us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value229524192499259525562622269626872647266026212063
Percentage of FinancingReceivableCreditQualityRating326.1310.4326.7338.6336.1410.6445.8451.9421.7427.5419.5392.6

ebsb:FinancingReceivableCreditQualityRating us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value220024042483257925392605267926692627264326042045
Percentage of FinancingReceivableCreditQualityRating312.7308.4324.6336.5334.0407.9442.9448.9418.7424.7416.8389.2

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value861515151516161718161617
Percentage of FinancingReceivableCreditQualityRating12.32.02.12.02.12.62.72.92.92.62.63.2

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:Substandard


Financing
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8.1760.2630.2720.2810.7150.7350.7521.0770.7840.846
Percentage of FinancingReceivableCreditQualityRating1.20.00.00.00.10.10.10.20.10.2

ebsb:FinancingReceivableCreditQualityRating us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value645625731666742716707656748726686594610638641604517567502490484413421384335265
Percentage of FinancingReceivableCreditQualityRating91.780.395.686.997.7112.2116.9110.4119.2116.6109.9101.6107.4119.8122.0107.692.8108.197.597.696.886.6105.4105.294.780.4

ebsb:FinancingReceivableCreditQualityRating us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:ConstructionLoans, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value645625731666742716707656748726686594610638641604500
Percentage of FinancingReceivableCreditQualityRating91.780.395.686.997.7112.2116.9110.4119.2116.6109.9101.6107.4119.8122.0107.697.1

ebsb:FinancingReceivableCreditQualityRating us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty

srt:Multifamily


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value80987888094194197210031069106110361010969911779
Percentage of FinancingReceivableCreditQualityRating115.0112.7115.1122.8123.8152.2165.9179.8169.2166.5161.7165.7160.2148.3

ebsb:FinancingReceivableCreditQualityRating us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:InternalCreditAssessment

srt:Multifamily, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value80987888094194197210001066105810321006965907774
Percentage of FinancingReceivableCreditQualityRating115.0112.7115.1122.8123.8152.2165.4179.3168.6165.9161.0165.0159.5147.4

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear


Financing
Period End2020-12-31
Value1406
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear100.0

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2020-12-31
Value231
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear16.5

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-31
Value670
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear47.7

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2020-12-31
Value182
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear13.0

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2020-12-31
Value64
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear4.6

us-gaap:RealEstateLoan


Financing
Period End2020-12-31
Value1174
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear83.5

ebsb:FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2020-12-31
Value257
Percentage of FinancingReceivableOriginatedFiveYearsAndPriorBeforeLatestFiscalYear18.3

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructurings

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructurings


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1.6011.9972.1512.3942.712.6363.0423.4123.7712131313131314141414161617171819212221181919
Percentage of FinancingReceivableRecordedInvestmentTroubleDebtRestructurings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsAccrualStatus

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsAccrualStatus


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1.4921.581.7311.7442.0551.8432.3362.6963.048121212121212121313131313141413141414144.174.0964.086
Percentage of FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsAccrualStatus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsAccrualStatus us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:OneToFourFamily


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1.4921.581.7311.7442.0551.8432.0842.1042.1182.1362.1521.942.0932.1092.1252.1632.1822.22.2192.2372.2542.6012.6212.2412.9062.9252.9462.7532.5542.5742.588
Percentage of FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsAccrualStatus100.0100.0100.0100.0100.0100.089.278.069.517.417.415.916.816.816.816.916.716.716.716.416.518.418.416.119.720.320.319.261.262.863.3

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsNonAccrualStatus

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsNonAccrualStatus


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.1090.4170.420.650.6550.7930.7060.7160.7220.7290.771.0081.0171.0311.0461.4881.0951.1081.1232.6553.1853.2133.1114.7644.3657.078.4346.712141515
Percentage of FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsNonAccrualStatus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsNonAccrualStatus us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:OneToFourFamily


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.1090.4170.420.650.6550.7930.7060.7160.7220.7290.771.0081.0171.0311.0461.3151.0951.1081.1231.3861.381.3921.2611.6661.3471.171.4691.2041.4711.7031.5
Percentage of FinancingReceivableRecordedInvestmentTroubleDebtRestructuringsNonAccrualStatus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.088.4100.0100.0100.052.243.343.340.535.030.916.517.417.910.110.89.7

ebsb:ImpairedFinancingReceivableWithRelatedAllowance

ebsb:ImpairedFinancingReceivableWithRelatedAllowance


Impaired
Period End2021-06-302021-03-31
Value2492000.0166000.0
Percentage of ImpairedFinancingReceivableWithRelatedAllowance100.0100.0

ebsb:ImpairedFinancingReceivableWithRelatedAllowance us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Impaired
Period End2021-06-30
Value2326000.0
Percentage of ImpairedFinancingReceivableWithRelatedAllowance93.3

ebsb:InterestBearingDemandDeposit us-gaap:FinancialInstrument

ebsb:InterestBearingDemandDeposit

ebsb:ReciprocalDeposits


Interest
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302017-12-31
Value764764687648681569
Percentage of InterestBearingDemandDeposit100.0100.0100.0100.0100.0100.0

ebsb:InterestBearingDemandDepositBrokered

ebsb:InterestBearingDemandDepositBrokered


Interest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value175175175175175150150150150150150150569296
Percentage of InterestBearingDemandDepositBrokered100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:InterestBearingDomesticDepositListingServiceCertificateOfDeposit

ebsb:InterestBearingDomesticDepositListingServiceCertificateOfDeposit


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1431525072766336403546545451100.943
Percentage of InterestBearingDomesticDepositListingServiceCertificateOfDeposit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:InterestReceivableFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

ebsb:InterestReceivableFairValue

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value192223211713141415141412
Percentage of InterestReceivableFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:InterestReceivableFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value192223211713141415141412
Percentage of InterestReceivableFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value192223211713141415141412
Percentage of InterestReceivableFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:LeverageCapital dei:LegalEntity

ebsb:LeverageCapital

ebsb:Bank


Leverage
Period End2020-12-31
Value719
Percentage of LeverageCapital100.0

ebsb:LeverageCapital us-gaap:ConsolidatedEntities

srt:ParentCompany


Leverage
Period End2020-12-31
Value746
Percentage of LeverageCapital103.8

ebsb:LeverageCapitalRatio dei:LegalEntity

ebsb:LeverageCapitalRatio

ebsb:Bank


Leverage
Period End2020-12-31
Value11.2
Percentage of LeverageCapitalRatio100.0

ebsb:LeverageCapitalRatio us-gaap:ConsolidatedEntities

srt:ParentCompany


Leverage
Period End2020-12-31
Value11.6
Percentage of LeverageCapitalRatio103.6

ebsb:LeverageCapitalRequiredToBeWellCapitalized dei:LegalEntity

ebsb:LeverageCapitalRequiredToBeWellCapitalized

ebsb:Bank


Leverage
Period End2020-12-31
Value515
Percentage of LeverageCapitalRequiredToBeWellCapitalized100.0

ebsb:LeverageCapitalRequiredToBeWellCapitalized us-gaap:ConsolidatedEntities

srt:ParentCompany


Leverage
Period End2020-12-31
Value515
Percentage of LeverageCapitalRequiredToBeWellCapitalized100.0

ebsb:LeverageCapitalRequiredToBeWellCapitalizedRatio dei:LegalEntity

ebsb:LeverageCapitalRequiredToBeWellCapitalizedRatio

ebsb:Bank


Leverage
Period End2020-12-31
Value8.0
Percentage of LeverageCapitalRequiredToBeWellCapitalizedRatio100.0

ebsb:LeverageCapitalRequiredToBeWellCapitalizedRatio us-gaap:ConsolidatedEntities

srt:ParentCompany


Leverage
Period End2020-12-31
Value8.0
Percentage of LeverageCapitalRequiredToBeWellCapitalizedRatio100.0

ebsb:LineOfCreditWithFederalHomeLoanBank

ebsb:LineOfCreditWithFederalHomeLoanBank


Line
Period End2021-06-302021-03-312020-12-312020-09-30
Value10000000.010000000.010000000.09400000.0
Percentage of LineOfCreditWithFederalHomeLoanBank100.0100.0100.0100.0

ebsb:LoanCommitmentsToOriginate

ebsb:LoanCommitmentsToOriginate


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value10261103107511971127119112881037117513001220131112131262120512241194129211781320106412049971000982758670667713594613
Percentage of LoanCommitmentsToOriginate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:LoanCommitmentsToOriginate us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:StandbyLettersOfCredit, ebsb:UnadvancedPortionOfExistingLoans


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value370352350380406343363311359414311354366346301275287372314295284283149166120119
Percentage of LoanCommitmentsToOriginate36.132.032.631.836.028.928.230.030.631.825.627.130.227.425.022.524.128.826.722.426.823.515.016.712.317.8

ebsb:LoanCommitmentsToOriginate us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialAndIndustrialSector, us-gaap:UnfundedLoanCommitment


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value215.7718.41330239.517167.59512217.4652317.12230126.3363165283045764119
Percentage of LoanCommitmentsToOriginate2.10.50.82.52.00.81.30.71.11.60.64.02.60.62.51.00.52.82.75.02.62.54.67.64.22.8

ebsb:LoanCommitmentsToOriginate us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:HomeEquityLinesOfCredit, ebsb:UnadvancedPortionOfExistingLoans


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value8177797885818276726456524949464139383635343334343332
Percentage of LoanCommitmentsToOriginate8.07.07.46.67.66.96.47.46.14.94.64.04.03.93.83.43.33.03.12.73.32.83.53.53.44.9

ebsb:OneToFourFamily, us-gaap:UnfundedLoanCommitment


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value2427415729432630302820182115252033211829252515201420
Percentage of LoanCommitmentsToOriginate2.42.53.94.82.63.72.03.02.62.21.71.41.81.22.11.62.81.71.62.22.42.11.52.01.53.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:UnfundedLoanCommitment


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value142016171242632751618213910215111675837342172127253576718646
Percentage of LoanCommitmentsToOriginate1.41.91.51.51.13.64.92.74.44.76.810.68.412.09.66.27.05.73.613.112.021.05.86.718.96.9

us-gaap:ConstructionLoans, ebsb:UnadvancedPortionOfExistingLoans


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value430492501431508529402434496548559550574506603557558617503500430457567461405315
Percentage of LoanCommitmentsToOriginate41.944.646.736.045.144.431.241.842.242.145.842.047.340.150.145.546.747.842.737.940.538.056.946.141.347.0

us-gaap:ConstructionLoans, us-gaap:UnfundedLoanCommitment


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value8212676201631403331491531631821426718581241185132231222132121125171180116
Percentage of LoanCommitmentsToOriginate8.011.47.116.85.611.825.914.413.012.614.910.95.614.76.819.815.510.219.616.812.510.112.617.218.317.3

ebsb:LoansAndLeasesReceivableRatioToAllLoans us-gaap:EquitySecuritiesByIndustry

ebsb:LoansAndLeasesReceivableRatioToAllLoans

us-gaap:CommercialAndIndustrialSector


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value13.50.1330.1120.1050.1030.1080.1080.1110.1110.110.1080.1130.1240.130.1290.1310.1360.1410.1470.130.1250.1290.123
Percentage of LoansAndLeasesReceivableRatioToAllLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:LoansAndLeasesReceivableRatioToAllLoans us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value45.90.4470.460.4690.4670.4540.4610.4640.4610.4620.4550.4420.4550.4480.440.4510.4340.4420.4350.4310.4350.4130.428
Percentage of LoansAndLeasesReceivableRatioToAllLoans340.0336.1410.7446.7453.4420.4426.9418.0415.3420.0421.3391.2366.9344.6341.1344.3319.1313.5295.9331.5348.0320.2348.0

us-gaap:ConsumerPortfolioSegment


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.20.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0020.0030.0030.0030.0030.0030.0040.003
Percentage of LoansAndLeasesReceivableRatioToAllLoans1.51.51.81.91.91.91.91.81.81.81.91.81.61.51.61.52.22.12.02.32.43.12.4

ebsb:LoansAndLeasesReceivableRatioToAllLoans us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1.30.0130.0140.0120.0120.010.0090.0090.0090.0090.0090.010.0090.010.010.0110.0120.0130.0150.0150.0170.0180.019
Percentage of LoansAndLeasesReceivableRatioToAllLoans9.69.812.511.411.79.38.38.18.18.28.38.87.37.77.88.48.89.210.211.513.614.015.4

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value10.70.1110.1150.1150.1160.1150.1150.1140.1210.1230.1240.1290.1230.1280.1340.1350.1420.1260.140.1490.1570.1680.175
Percentage of LoansAndLeasesReceivableRatioToAllLoans79.383.5102.7109.5112.6106.5106.5102.7109.0111.8114.8114.299.298.5103.9103.1104.489.495.2114.6125.6130.2142.3

ebsb:LoansAndLeasesReceivableRatioToAllLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value11.80.130.1260.1230.1140.1290.1250.1210.1120.1180.1290.1370.1330.120.1390.1280.1320.1370.1270.1370.1310.1220.099
Percentage of LoansAndLeasesReceivableRatioToAllLoans87.497.7112.5117.1110.7119.4115.7109.0100.9107.3119.4121.2107.392.3107.897.797.197.286.4105.4104.894.680.5

us-gaap:RealEstateLoan


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value86.30.8650.8860.8930.8950.890.890.8870.8870.8880.890.8850.8740.8680.8690.8670.8610.8560.850.8670.8720.874
Percentage of LoansAndLeasesReceivableRatioToAllLoans639.3650.4791.1850.5868.9824.1824.1799.1799.1807.3824.1783.2704.8667.7673.6661.8633.1607.1578.2666.9697.6710.6

ebsb:LoansAndLeasesReceivableRatioToAllLoans us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Loans
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value16.60.1640.1710.1740.1860.1820.180.1790.1840.1760.167
Percentage of LoansAndLeasesReceivableRatioToAllLoans123.0123.3152.7165.7180.6168.5166.7161.3165.8160.0147.8

ebsb:LoansServicedForFederalHomeLoanBankWithRecourseProvision

ebsb:LoansServicedForFederalHomeLoanBankWithRecourseProvision


Loans
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value243238434756657180
Percentage of LoansServicedForFederalHomeLoanBankWithRecourseProvision100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:NonReciprocalInterestBearingDemandDepositBrokered

ebsb:NonReciprocalInterestBearingDemandDepositBrokered


Non
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1751501501000.0
Percentage of NonReciprocalInterestBearingDemandDepositBrokered100.0100.0100.0100.00.0

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4999529355165653571756905747575058215763564852765165494846684546429640583934369435263224305829002718265126472481236723112258
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value703777763763758636602593626621623583567531524560555522513500498476399364353329
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment14.114.713.813.513.311.210.510.310.810.811.011.111.010.711.212.312.912.913.113.514.114.813.112.613.012.5

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value22862419249825932553262026942686264626592621243723862252206220691924178817731604156414071324126911291130
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment45.745.745.345.944.746.046.946.745.546.246.446.246.245.544.245.544.844.145.143.444.443.743.343.841.542.7

us-gaap:ConsumerPortfolioSegment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value9.749101012111112121111101010101010109.719.7129.689.5689.832109.7939.5648.772
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.40.3

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value5664687374786966605050464545484242424246474746484850
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment1.11.21.21.31.31.41.21.21.00.90.90.90.90.91.00.91.01.11.11.31.31.51.51.71.81.9

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value489516563603634655658666667659646635634612602558551542531525445453456456460464
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment9.89.810.210.711.111.511.511.611.511.411.412.012.312.412.912.312.813.413.514.212.614.114.915.717.017.5

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value645625731666742716707656748726686594610638641604517566501487470398405366316256
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment12.911.813.311.813.012.612.311.412.912.612.211.311.812.913.713.312.014.012.813.213.412.413.312.611.79.7

ebsb:NotDeemedImpairedFinancingReceivableRecordedInvestment us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value80987888094194197210031068106010341009968910778
Percentage of NotDeemedImpairedFinancingReceivableRecordedInvestment16.216.616.016.716.517.117.518.618.218.017.918.417.616.7

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value61636867605050505353534949474545434139383834333229282826252424
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value7.9958.3018.4538.2317.3326.1145.7255.6586.2386.1866.2365.9196.3675.9786.0846.8796.9016.486.4526.3216.7516.4595.5765.2585.1824.619
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance12.913.112.312.212.112.011.411.111.611.511.712.012.912.613.515.116.015.616.116.417.718.916.816.217.316.4

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value2729303731262627272827252523212120191817161514141213
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance45.346.543.855.252.352.553.654.051.652.452.352.351.450.547.848.347.846.046.944.844.444.143.544.642.846.1

us-gaap:ConsumerPortfolioSegment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.4360.4450.4960.0590.070.0790.1160.0950.0930.090.1120.1010.090.080.0960.0970.0970.0920.0870.1040.1120.0910.0920.1770.1060.097
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance0.70.70.70.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.50.40.3

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.1380.1660.2060.280.1780.0940.0690.060.0660.0610.070.0650.0630.0620.0620.0620.0710.0840.0730.0860.0920.0960.1440.1470.1520.1
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance0.20.30.30.40.30.20.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.30.40.50.50.4

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1.4511.6172.0762.2931.5230.7870.6550.5960.80.8620.9880.9690.9530.860.951.01.1161.3021.3181.411.2711.3351.3511.4031.5141.773
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance2.32.63.03.42.51.51.31.21.51.61.92.01.91.82.12.22.63.13.33.73.33.94.14.35.16.3

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value22212510119.4578.9138.53610109.7558.89.1649.58110108.8469.9118.9319.1719.097.7398.3137.856.8115.123
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance36.134.136.615.418.718.617.716.819.018.618.417.818.620.322.622.220.623.822.323.823.922.725.124.322.818.2

ebsb:NotDeemedImpairedFinancingReceivableRelatedAllowance us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Not
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.5171.7222.2519.0388.4777.687.8258.4438.5938.3828.1757.7477.2826.13
Percentage of NotDeemedImpairedFinancingReceivableRelatedAllowance2.52.73.313.414.015.115.616.616.015.615.415.714.813.6

ebsb:PropertyPlantAndEquipmentExcludingRightOfUseAsset

ebsb:PropertyPlantAndEquipmentExcludingRightOfUseAsset


Property
Period End2020-12-312019-12-312018-12-31
Value494845
Percentage of PropertyPlantAndEquipmentExcludingRightOfUseAsset100.0100.0100.0

ebsb:ResidentialRealEstateLoansServicedForOthersUnpaidPrincipalBalances

ebsb:ResidentialRealEstateLoansServicedForOthersUnpaidPrincipalBalances


Residential
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value87100117133107129
Percentage of ResidentialRealEstateLoansServicedForOthersUnpaidPrincipalBalances100.0100.0100.0100.0100.0100.0

ebsb:ServicingLoans

ebsb:ServicingLoans


Servicing
Period End2021-06-302021-03-312020-12-312019-12-31
Value188187176173
Percentage of ServicingLoans100.0100.0100.0100.0

ebsb:TimeDeposits250000OrMore

ebsb:TimeDeposits250000OrMore


Time
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value314350336331335331363387386389418433429380371330286283277282278271237206
Percentage of TimeDeposits250000OrMore100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:TimeDepositsLessThan250000

ebsb:TimeDepositsLessThan250000


Time
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value747809883919895105812061252130212751267116211401027999962842856850823780712651501
Percentage of TimeDepositsLessThan250000100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ebsb:WeightedAverageRateDomesticDepositListingServiceCertificatesOfDeposit

ebsb:WeightedAverageRateDomesticDepositListingServiceCertificatesOfDeposit


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.181.21.010.90.0090.01670.02350.02490.02580.02410.02370.02370.02340.0210.0128
Percentage of WeightedAverageRateDomesticDepositListingServiceCertificatesOfDeposit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccruedLiabilitiesAndOtherLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value615661625961595854453234313331292631302623232622212524
Percentage of AccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Accrued
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.193.4556.2380.729
Percentage of AccruedLiabilitiesAndOtherLiabilities10.15.818.92.3

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value454000.0230000.0-138000.0639000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value512000.0377000.0210000.0511000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0

us-gaap:AdvancesFromFederalHomeLoanBanks us-gaap:FederalHomeLoanBankAdvancesOption

us-gaap:AdvancesFromFederalHomeLoanBanks

us-gaap:FederalHomeLoanBankAdvancesCallableOption


Advances
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value445445445445445445360360360385395
Percentage of AdvancesFromFederalHomeLoanBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdvancesFromFederalHomeLoanBanks us-gaap:VariableRate

ebsb:FixedInterestRate


Advances
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value560560610655655720636636580385296300301327358351349274237147
Percentage of AdvancesFromFederalHomeLoanBanks126.0126.0137.2147.3147.3162.0176.7176.8161.1100.375.20.00.00.00.00.00.00.00.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByAssetClass

us-gaap:AssetsFairValueDisclosure

ebsb:ImpairedLoans


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value8.81.93.74.24.15.04.61.71.72.52.12.11.81.71.92.13.74.9
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.1128.9121616131514141413161517
Percentage of AssetsFairValueDisclosure103.5468.4329.4385.8400.0262.6331.4841.9869.2590.5639.9768.3857.1935.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.8110111213131515161617171820
Percentage of AssetsFairValueDisclosure111.5553.6306.1290.1317.6276.4327.7929.4970.6675.6817.1833.81024.31083.6

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value7.25.381101212124.5616.8064.0341.1631.893.93.081.284
Percentage of AssetsFairValueDisclosure81.8283.2282.2288.7314.2247.399.2400.4237.346.590.0185.7171.167.6

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2624334042393436353232373639
Percentage of AssetsFairValueDisclosure296.81305.2917.7964.51031.8786.3758.32171.62077.11312.61547.01787.92052.52086.7

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value519000.0540000.0642000.0661000.0672000.0558000.0354000.0398000.0336000.0221000.0166000.0239000.0299000.0309000.0359000.0383000.0539000.0630000.0639000.0665000.0877000.01028000.01437000.01566000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value107000.0108000.0116000.0121000.0121000.0122000.092000.0103000.097000.083000.076000.063000.071000.06000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax20.620.018.118.318.021.926.025.928.937.645.80.00.02.5

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value270000.0290000.0359000.0373000.0412000.0368000.0168000.0186000.0154000.0117000.085000.093000.0122000.0231000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax52.053.755.956.461.365.947.546.745.852.951.20.00.096.7

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17000.017000.021000.024000.018000.020000.028000.043000.041000.010000.05000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.33.13.33.62.73.67.910.812.24.53.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value125000.0125000.0146000.0143000.0121000.048000.066000.066000.044000.011000.01000.02000.06000.015000.021000.017000.045000.067000.080000.089000.0110000.0130000.0157000.0182000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax24.123.122.721.618.08.618.616.613.15.00.00.82.04.95.84.48.310.612.513.412.512.610.911.6

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value9000.010000.010000.011000.09000.08000.034000.040000.078000.0157000.0358000.02000.02000.03000.05000.06000.06000.030000.036000.0147000.046000.0139000.076000.0452000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9000.010000.010000.011000.09000.08000.034000.040000.078000.0135000.0249000.0391000.0318000.02000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.086.069.60.00.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value9.39.988101112131415161617171819204.807101621546469778998114123107
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.5590.5630.5670.5710.5750.5790.5840.620.6280.6320.6390.6460.6520.07
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis6.05.65.35.04.74.44.04.03.93.83.73.63.50.3

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6.3627.0067.7068.5129.331101011111212131415
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis68.470.172.173.875.575.471.672.372.172.773.574.175.178.2

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3090.3460.3460.3730.3730.6081.5281.5651.811.871.8691.9091.9071.942
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis3.33.53.23.23.04.610.410.111.111.110.810.610.29.5

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2.072.0732.0752.0772.082.0822.0852.0872.0892.0922.0942.0962.0992.4212.4240.3410.6261.1121.2023.2234.2644.34.3265.1425.2285.2295.441
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis22.320.819.418.016.815.714.113.512.912.412.111.711.212.311.97.16.16.95.75.96.66.25.65.85.34.64.4

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.8640.9230.9751.0270.781.2860.870.930.9540.8770.3030.3350.3690.0010.1090.0010.0010.6680.7234.1049.144142460698083504749
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.3450.4020.4530.5040.5080.5270.5950.6540.6770.5980.3030.3350.369
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost39.943.646.549.165.141.068.470.371.068.2100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.5190.5210.5220.5230.2720.7590.2750.2760.2770.2790.6670.7221.1031.1281.9141.944.3424.4274.428
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost60.156.453.550.934.959.031.629.729.031.899.999.926.912.312.97.87.16.35.5

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.910.9741.0331.0860.8081.3120.8790.9420.960.8740.2970.3260.3610.0010.1090.0010.0010.6870.7374.1369.204142461708183504850
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.3540.4120.4650.5160.520.5340.5940.6540.6750.5930.2970.3260.361
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue38.942.345.047.564.440.767.669.470.367.8100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.5560.5620.5680.570.2880.7780.2850.2880.2850.2810.6860.7361.1341.1661.9782.0084.4494.554.573
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue61.157.755.052.535.659.332.430.629.732.299.999.927.412.713.28.07.36.55.6

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value8.4369.0659.719101111131415151717188.108194.4654.6494.9186.0626.5659.0739.4479.8141213182133
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.5590.5630.5670.5710.5750.5790.5840.620.6280.6320.6390.6460.652
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis6.66.25.85.45.04.84.24.34.14.03.73.73.6

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6.0176.6047.2538.0088.8239.4749.964101111121213
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis71.372.974.676.276.279.171.872.572.272.973.073.674.6

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.3090.3460.3460.3730.3730.6081.5281.5651.811.871.8691.9091.907
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis3.73.83.63.63.25.111.010.811.811.711.010.910.4

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.5511.5521.5531.5541.8081.3231.811.8111.8121.8132.0942.0962.0992.1012.099
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis18.417.116.014.815.611.013.012.511.911.412.311.911.525.910.5

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9.8110111213131515161617171819205.104101621546569788999115125109119131
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value9.8110111213131515161617171819205.104101621546569788999115125
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.6660.6710.6830.6920.6960.7010.6760.7230.7250.7130.7110.7030.7180.076
Percentage of AvailableForSaleSecuritiesDebtSecurities6.86.46.05.75.35.14.54.64.44.24.14.03.90.4

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6.6237.2868.0558.8749.734101011111212121316
Percentage of AvailableForSaleSecuritiesDebtSecurities67.569.371.172.874.875.070.971.671.572.373.374.175.178.4

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3260.3630.3670.3970.3910.6281.5561.6081.8511.871.8321.8191.8481.942
Percentage of AvailableForSaleSecuritiesDebtSecurities3.33.53.23.33.04.510.310.211.211.110.710.410.09.4

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:InvestmentType

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2.1952.1982.2212.222.2012.132.1512.1532.1332.0932.0312.012.0272.3662.4260.3470.6411.1331.2193.2684.3314.384.4155.2525.3585.3865.623
Percentage of AvailableForSaleSecuritiesDebtSecurities22.420.919.618.216.915.414.313.612.912.411.811.511.012.111.86.86.16.95.66.06.66.35.75.85.44.74.5

us-gaap:BankOwnedLifeInsurance

us-gaap:BankOwnedLifeInsurance


Bank
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value42424141414141414141404140404040414140404039393939383838383737
Percentage of BankOwnedLifeInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Capital

us-gaap:Capital


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value815754705669633606591259
Percentage of Capital100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Capital dei:LegalEntity

ebsb:Bank


Capitaldei:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value788711625555493442416246
Percentage of Capital96.694.388.783.078.073.070.394.8

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value11011034914702508457406428361344371402
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value11011034914702508457406428361344371402
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value11011034914702508457406428361344371402
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndDueFromBanks

us-gaap:CashAndDueFromBanks


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value11011034914702508457406428361344371313329316402300234327236182101154969817627320538836715686
Percentage of CashAndDueFromBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value11011034914702508457406428361344371313402236
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1224582334
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations1.46.115.85.714.6

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax

us-gaap:DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value632000.0320000.0-192000.0931000.0
Percentage of DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value594000.0595000.0142000.0144000.0377000.0149000.03370000.03881000.04778000.0945000.0923000.0171000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value594000.0595000.0142000.0144000.0377000.0149000.03370000.03881000.04778000.0157000.0159000.0171000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.016.617.2100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value9000.010000.03000.03000.03000.02000.034000.040000.078000.012000.037000.02000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value9000.010000.03000.03000.03000.02000.034000.040000.078000.02000.02000.02000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.016.75.4100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312018-12-31
Value0.5110.520.4790.6017.61711
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312018-12-31
Value0.5110.520.4790.6016.468.479
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.084.872.2

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312018-12-31
Value7000.08000.06000.06000.0145000.0321000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312018-12-31
Value7000.08000.06000.06000.0133000.0247000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.091.776.9

us-gaap:DebtSecuritiesAvailableForSaleRestricted us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank

us-gaap:DebtSecuritiesAvailableForSaleRestricted

srt:FederalHomeLoanBankOfBoston


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1500000.01700000.01800000.01900000.02000000.02100000.02200000.02300000.02400000.02400000.02600000.02700000.02900000.0
Percentage of DebtSecuritiesAvailableForSaleRestricted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRestricted us-gaap:ShortTermDebtType

us-gaap:FederalReserveBankAdvances


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value270000.0273000.0276000.0278000.0281000.0284000.0292000.0294000.0296000.0297000.0299000.0301000.0463000.0
Percentage of DebtSecuritiesAvailableForSaleRestricted18.016.115.314.614.113.513.312.812.312.411.511.116.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value212121171616
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4190000.03318000.03191000.02904000.03296000.01882000.03933000.04417000.0
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities us-gaap:IncomeTaxAuthority

us-gaap:DomesticCountry


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3526000.02488000.02303000.02329000.02625000.01467000.03201000.03524000.0
Percentage of DeferredIncomeTaxLiabilities84.275.072.280.279.677.981.479.8

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value664000.0830000.0888000.0575000.0671000.0415000.0732000.0893000.0
Percentage of DeferredIncomeTaxLiabilities15.825.027.819.820.422.118.620.2

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2520211824231917
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross us-gaap:IncomeTaxAuthority

us-gaap:DomesticCountry


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1713141219181513
Percentage of DeferredTaxAssetsGross68.568.868.968.177.978.077.977.9

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value8.0476.266.6625.7955.4825.0944.3163.95
Percentage of DeferredTaxAssetsGross31.531.231.131.922.122.022.122.1

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value790000.0735000.01394000.0259000.0208000.0210000.0216000.0212000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4102000.03805000.03717000.03720000.05011000.04880000.04002000.03687000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1914141216131110
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts


Deferred
Period End2020-12-312019-12-312018-12-31
Value249000.0952000.0823000.0
Percentage of DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value738000.0655000.01600000.01659000.0652000.0512000.0305000.0253000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfDomesticSubsidiaries

us-gaap:DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfDomesticSubsidiaries


Deferred
Period End2020-12-31
Value2800000.0
Percentage of DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfDomesticSubsidiaries100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value648000.0477000.0265000.0713000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-520000.0-332000.0-102000.0-533000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value128000.0145000.0163000.0180000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

ebsb:SupplementalExecutiveRetirementBenefits


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1000000.0916000.01200000.01300000.01300000.0
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear


Defined
Period End2020-12-31
Value24000.0
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear100.0

us-gaap:DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear

us-gaap:DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear


Defined
Period End2020-12-31
Value17000.0
Percentage of DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear100.0

us-gaap:Deposits

us-gaap:Deposits


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4863509750814952482048214921495550185023488444114389418941073945365936563475322929982911274326302551259425032403256423172248
Percentage of Deposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DepositsFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value481050155172507549394838488650075061497547143995
Percentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsFairValueDisclosure us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value486350975081495248204821492149555018502348844107
Percentage of DepositsFairValueDisclosure101.1101.698.297.697.699.7100.799.099.1101.0103.6102.8

us-gaap:EstimateOfFairValueFairValueDisclosure


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value481050155172507549394838488650075061497547143995
Percentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsMoneyMarketDeposits

us-gaap:DepositsMoneyMarketDeposits


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value86385293078975369967568967568572984486585192197597210059808638128808608809071009942893875851847
Percentage of DepositsMoneyMarketDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsSavingsDeposits

us-gaap:DepositsSavingsDeposits


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value866870855850833867882848986958794327337343333324321323305301300297288283286285272270259
Percentage of DepositsSavingsDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeAssets

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:InterestRateSwap, us-gaap:CarryingReportedAmountFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateSwap, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, ebsb:LoanLevelRateSwapsBorrower


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssets us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, ebsb:LoanLevelRateSwapsBorrower


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCollateralRightToReclaimCash

us-gaap:DerivativeCollateralRightToReclaimCash


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value7.26.4111313135.48.44.21.50.01.31.31.31.33.73.21.81.81.81.61.61.41.41.41.40.950.70.60.3
Percentage of DerivativeCollateralRightToReclaimCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeLiabilities

us-gaap:InterestRateSwap, us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:InterestRateSwap, us-gaap:CarryingReportedAmountFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateSwap, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel3, ebsb:LoanLevelRateSwapsBorrower


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities us-gaap:FinancialInstrument

ebsb:LoanLevelRateSwapsBorrower


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value7.25.381101212124.5616.8064.0341.1631.891.284
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:RestrictedStock


Employee
Period End2020-12-31
Value2800000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0

us-gaap:EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount

us-gaap:EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount


Employee
Period End2020-12-31
Value18
Percentage of EmployeeStockOwnershipPlanESOPDebtStructureDirectLoanAmount100.0

us-gaap:EmployeeStockOwnershipPlanESOPDeferredSharesFairValue

us-gaap:EmployeeStockOwnershipPlanESOPDeferredSharesFairValue


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3246345250393213
Percentage of EmployeeStockOwnershipPlanESOPDeferredSharesFairValue100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares

us-gaap:EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1339000.01217000.01095000.0973000.0851000.0729000.0608000.0507000.0
Percentage of EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares

us-gaap:EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value122000.0122000.0122000.0122000.0122000.0122000.0122000.0101000.0
Percentage of EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOwnershipPlanESOPSharesInESOP

us-gaap:EmployeeStockOwnershipPlanESOPSharesInESOP


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3399000.03437000.03461000.03652000.03652000.03652000.03652000.02027000.0
Percentage of EmployeeStockOwnershipPlanESOPSharesInESOP100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate us-gaap:Range, us-gaap:FederalHomeLoanBankAdvancesOption

us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate

srt:WeightedAverage, us-gaap:FederalHomeLoanBankAdvancesCallableOption


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.532.532.532.530.02530.02530.02890.02890.0280.0210.0154
Percentage of FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate us-gaap:VariableRate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value2.442.442.332.320.02320.02350.02570.02570.02580.02070.02060.02060.01530.0151
Percentage of FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate96.496.492.191.791.792.988.988.992.1134.40.00.00.00.0

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds

us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds


Federal
Period End2020-12-31
Value735
Percentage of FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds100.0

us-gaap:FederalHomeLoanBankAdvancesLongTerm us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:FederalHomeLoanBankAdvancesLongTerm

ebsb:PaycheckProtectionProgramLiquidityFacility


Federal
Period End2021-06-302021-03-312020-12-312020-09-30
Value560560610655
Percentage of FederalHomeLoanBankAdvancesLongTerm100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFourToFiveYearsFromBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFourToFiveYearsFromBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1.01.02.612.610.02610.02610.0310.0310.0310.02880.01790.01790.01790.01790.01460.01460.01420.01460.01220.0122
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFourToFiveYearsFromBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate


Federal
Period End2020-09-302020-06-302020-03-312018-12-312018-09-302016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.810.00810.00810.02660.02370.03990.03990.019900.01830.01830.0160.012
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate us-gaap:VariableRate

ebsb:FixedInterestRate


Federal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1.182.160.02160.02410.0230.02060.01940.01860.01630.01630.01250.01260.01020.01070.01270.0132
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate0.0266.7266.7297.50.00.00.069.968.80.00.00.00.00.00.00.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value2.02.01.181.180.01180.01180.0230.0230.02290.02380.01860.01790.01740.0170.01260.01250.01250.01250.01320.0132
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateThreeToFourYearsFromBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateThreeToFourYearsFromBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value2.612.613.13.10.0310.0310.020.01730.01970.01790.0170.0170.0170.0170.0180.0180.01790.01770.01230.0123
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateThreeToFourYearsFromBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value3.13.12.02.00.020.020.0170.0170.0170.0170.02380.02370.02360.01740.01660.01230.01230.01720.01250.0163
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value858520202020295295275175105105105105454560454.9896.41
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value15015050505050135135136664.164.6875.215.748484343438989
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value202029529529529515015011010525252525535354294.8916.684
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate us-gaap:VariableRate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate

ebsb:FixedInterestRate


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value29529515015015015025252525676767286.2683.5323.98629433.0
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate


Federal
Period End2020-09-302020-06-302020-03-312018-12-312018-09-30
Value2525255040
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate100.0100.0100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate us-gaap:VariableRate

ebsb:FixedInterestRate


Federal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value5045451101353.1043.6334.163.03.0434815175289
Percentage of FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate0.0180.0180.0441.00.00.00.08.37.50.00.00.00.00.00.00.0

us-gaap:FederalHomeLoanBankStock

us-gaap:FederalHomeLoanBankStock


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value26283033333328282726293129272422221818171713101212121212121111
Percentage of FederalHomeLoanBankStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value6463686050505345
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses dei:LegalEntity

ebsb:Bank


Financing
Period End2020-12-312019-12-31
Value6850
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value8.1618.4678.4537.3326.1145.7656.2366.084
Percentage of FinancingReceivableAllowanceForCreditLosses12.713.312.312.112.011.511.713.5

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value3029303126262721
Percentage of FinancingReceivableAllowanceForCreditLosses47.146.443.852.352.553.552.247.6

us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value0.4360.4450.4960.070.0790.1160.1120.096
Percentage of FinancingReceivableAllowanceForCreditLosses0.70.70.70.10.20.20.20.2

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value0.1380.1660.2060.1780.0940.0690.070.062
Percentage of FinancingReceivableAllowanceForCreditLosses0.20.30.30.30.20.10.10.1

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value1.4511.6172.0761.530.7940.6911.0331.001
Percentage of FinancingReceivableAllowanceForCreditLosses2.32.53.02.51.61.41.92.2

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value222125119.4578.9139.75510
Percentage of FinancingReceivableAllowanceForCreditLosses34.734.036.618.618.617.718.322.5

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312018-12-312017-12-31
Value1.5171.7222.2518.4777.687.8258.246.263
Percentage of FinancingReceivableAllowanceForCreditLosses2.42.73.314.015.115.515.513.9

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear


Financing
Period End2020-12-31
Value744
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2020-12-31
Value73
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear9.9

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-31
Value436
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear58.7

us-gaap:ConsumerPortfolioSegment


Financing
Period End2020-12-31
Value0.184
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2020-12-31
Value67
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear9.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2020-12-31
Value14
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear2.0

us-gaap:RealEstateLoan


Financing
Period End2020-12-31
Value670
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear90.1

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2020-12-31
Value152
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear20.4

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear


Financing
Period End2020-12-31
Value804
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2020-12-31
Value271
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear33.8

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-31
Value178
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear22.2

us-gaap:ConsumerPortfolioSegment


Financing
Period End2020-12-31
Value4.029
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.5

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Financing
Period End2020-12-31
Value0.033
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2020-12-31
Value68
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8.5

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2020-12-31
Value214
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear26.7

us-gaap:RealEstateLoan


Financing
Period End2020-12-31
Value528
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear65.7

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2020-12-31
Value66
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear8.2

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear


Financing
Period End2020-12-31
Value621
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2020-12-31
Value37
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear6.1

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-31
Value243
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear39.2

us-gaap:ConsumerPortfolioSegment


Financing
Period End2020-12-31
Value3.713
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.6

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2020-12-31
Value91
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear14.8

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2020-12-31
Value150
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear24.2

us-gaap:RealEstateLoan


Financing
Period End2020-12-31
Value579
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear93.3

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2020-12-31
Value94
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear15.2

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear


Financing
Period End2020-12-31
Value876
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear100.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2020-12-31
Value52
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear6.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-31
Value530
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear60.5

us-gaap:ConsumerPortfolioSegment


Financing
Period End2020-12-31
Value0.788
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.1

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2020-12-31
Value77
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear8.8

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2020-12-31
Value70
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear8.0

us-gaap:RealEstateLoan


Financing
Period End2020-12-31
Value823
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear93.9

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2020-12-31
Value144
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear16.5

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear


Financing
Period End2020-12-31
Value981
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear100.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2020-12-31
Value85
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear8.7

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-31
Value436
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear44.4

us-gaap:ConsumerPortfolioSegment


Financing
Period End2020-12-31
Value1.91
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.2

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2020-12-31
Value76
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear7.8

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ConstructionLoans


Financing
Period End2020-12-31
Value216
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear22.1

us-gaap:RealEstateLoan


Financing
Period End2020-12-31
Value894
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear91.1

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:MortgageLoansOnRealEstateDescriptionTypeOfProperty, us-gaap:FinancingReceivablePortfolioSegment

srt:Multifamily, us-gaap:ResidentialPortfolioSegment


Financing
Period End2020-12-31
Value165
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear16.8

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value103.1213.1643.6023.823.1893.4053.956.0467.5446.9068.0067.9058.0318.3639.178111313152930313536283128374241
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.6350.6350.5270.5410.5320.3230.3230.350.350.5370.6760.6760.5190.5230.5230.5250.5290.6460.6530.730.7370.7450.8051.1010.8920.855
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus6.120.316.715.013.910.19.58.95.87.19.88.46.66.56.35.74.64.74.94.82.52.42.63.12.42.7

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302020-06-302019-06-302019-03-312018-12-312017-12-31
Value8.1760.1940.3180.640.3420.388
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus78.15.15.38.55.04.6

us-gaap:ResidentialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value9.8292.4862.6373.0613.2882.8663.0823.65.6967.0076.237.337.3867.5087.848.653101312142829303430
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus93.979.783.385.086.189.990.591.194.292.990.291.693.493.593.794.395.495.395.195.297.597.697.496.997.3

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-06-302018-03-312017-12-31
Value0.020.020.020.020.020.020.5630.5620.562
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus0.20.60.60.60.50.67.17.06.7

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.6332.4662.6173.0413.0742.8463.0823.65.3786.1155.8886.9776.4576.5686.89
Percentage of FinancingReceivableRecordedInvestmentNonaccrualStatus15.679.082.784.480.589.290.591.189.081.185.387.181.781.882.4

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRecordedInvestmentPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value142.7363.3143.6935.2645.1983.1914.994.2956.1526.9526.3136.6874.9696.5726.2617.3429.36810112523272930212422273434
Percentage of FinancingReceivableRecordedInvestmentPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:EquitySecuritiesByIndustry

us-gaap:CommercialAndIndustrialSector


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.6350.4890.750.3770.5230.990.3311.3310.350.5370.7290.5150.5190.5590.5280.5250.5340.5330.6530.7450.7370.7450.8051.1061.4360.937
Percentage of FinancingReceivableRecordedInvestmentPastDue4.317.922.610.29.919.010.426.78.18.710.58.27.811.28.08.47.35.76.36.32.93.12.93.74.73.8

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:CommercialAndIndustrialSector, us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2020-12-312020-09-302020-03-312019-12-312019-09-302018-12-312018-03-312017-12-312017-06-302016-09-302015-09-302015-06-302014-12-31
Value0.390.0170.6180.0080.9810.2140.0360.0050.0050.0150.0050.5440.005
Percentage of FinancingReceivableRecordedInvestmentPastDue11.80.511.90.319.73.10.70.10.10.10.01.80.0

us-gaap:CommercialAndIndustrialSector, us-gaap:FinancingReceivables60To89DaysPastDue


Financing
Period End2021-06-302020-03-312015-09-302014-12-31
Value0.1460.0490.1210.099
Percentage of FinancingReceivableRecordedInvestmentPastDue1.00.90.40.4

us-gaap:CommercialAndIndustrialSector, us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.4890.4890.360.360.5230.3230.3230.350.350.5370.5150.5150.5190.5230.5230.5250.5290.5330.6530.730.7370.7450.8050.980.8920.833
Percentage of FinancingReceivableRecordedInvestmentPastDue3.317.910.99.79.96.210.17.08.18.77.48.27.810.58.08.47.25.76.36.22.93.12.93.32.93.4

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302020-06-302020-03-312019-03-312018-12-312017-12-31
Value8.1760.1940.0630.3090.2510.098
Percentage of FinancingReceivableRecordedInvestmentPastDue55.23.71.25.03.61.5

us-gaap:ResidentialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value131.3441.8712.2723.442.7961.3782.0722.4443.9354.7484.2945.0143.0884.5894.5835.5877.858.711102322252722
Percentage of FinancingReceivableRecordedInvestmentPastDue90.049.156.561.565.353.843.241.556.964.068.368.075.062.169.873.276.183.883.585.192.893.493.892.791.9

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.020.220.020.0210.020.1910.020.5240.1121.0130.60.758
Percentage of FinancingReceivableRecordedInvestmentPastDue0.18.00.60.60.43.70.47.51.815.112.111.5

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.1871.1241.8512.2511.5462.5421.3782.0522.4443.3743.7973.2273.9072.1173.733
Percentage of FinancingReceivableRecordedInvestmentPastDue8.041.155.961.029.448.943.241.156.954.854.651.158.442.656.8

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit, us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2021-03-312020-09-302020-03-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.20.0010.1710.020.5240.0630.6970.2290.195
Percentage of FinancingReceivableRecordedInvestmentPastDue7.30.03.30.47.51.010.44.63.0

us-gaap:ResidentialPortfolioSegment, ebsb:HomeEquityLinesOfCredit, us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-06-302018-03-312017-12-31
Value0.020.020.020.020.020.020.3160.1430.521
Percentage of FinancingReceivableRecordedInvestmentPastDue0.10.70.60.50.40.44.72.97.9

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily, us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.3920.1950.5040.8920.3391.0530.610.8260.2850.3020.8770.1741.8380.4181.537
Percentage of FinancingReceivableRecordedInvestmentPastDue2.67.115.224.26.420.319.116.66.64.912.62.827.58.423.4

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily, us-gaap:FinancingReceivables60To89DaysPastDue


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.20.2310.4910.3290.6870.1640.0640.1190.5670.4620.5650.6690.6450.664
Percentage of FinancingReceivableRecordedInvestmentPastDue1.47.013.36.213.25.11.32.89.26.68.910.013.010.1

us-gaap:ResidentialPortfolioSegment, ebsb:OneToFourFamily, us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.5950.9291.1160.8680.8780.8020.6041.1622.042.5052.4582.4881.41.0541.532
Percentage of FinancingReceivableRecordedInvestmentPastDue4.034.033.723.516.715.418.923.347.540.735.439.420.921.223.3

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2021-06-302017-12-31
Value8.1760.098
Percentage of FinancingReceivableRecordedInvestmentPastDue55.21.5

us-gaap:ResidentialPortfolioSegment, us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value120.3950.5040.8932.0191.2240.610.8460.2850.3021.5770.9382.5351.0181.831.5841.7911.2251.4532.153.7491.4972.7441.9015.426
Percentage of FinancingReceivableRecordedInvestmentPastDue84.514.415.224.238.423.519.117.06.64.922.714.937.920.527.825.324.413.113.918.214.86.39.96.422.1

us-gaap:ResidentialPortfolioSegment, us-gaap:FinancingReceivables60To89DaysPastDue


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value0.20.2310.4910.5230.750.1640.0640.1190.8760.5520.7070.7630.8730.7061.2240.9990.4850.9650.2730.880.6020.2211.4232.943
Percentage of FinancingReceivableRecordedInvestmentPastDue1.47.013.39.914.45.11.32.814.27.911.211.417.610.719.513.65.29.22.33.52.50.84.812.0

us-gaap:ResidentialPortfolioSegment, us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value0.6150.9491.1360.8880.8980.8220.6041.1622.042.7572.6192.6491.7161.1972.0531.7752.7976.146.2937.6471820222414
Percentage of FinancingReceivableRecordedInvestmentPastDue4.234.734.324.017.115.818.923.347.544.837.742.025.724.131.228.438.165.560.364.674.584.583.181.457.8

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

ebsb:Consumer


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.8430.9030.6931.0441.3011.4121.4821.5871.5011.681.4751.5041.1541.3221.4551.1531.2210.9851.0711.021.10.8290.8971.0450.8821.0411.0480.91.0560.780.743
Percentage of FinancingReceivableRecordedInvestmentPastDue5.733.020.928.324.727.246.431.834.927.321.223.817.326.622.118.416.610.510.38.64.33.53.23.52.94.84.34.03.82.32.2

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue

ebsb:Consumer, us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.6670.6220.4480.6640.7310.7030.7170.9230.8450.9610.8870.9220.7150.760.8870.4890.8160.5330.6790.6250.6530.5890.580.60.4760.521
Percentage of FinancingReceivableRecordedInvestmentPastDue4.522.713.518.013.913.522.518.519.715.612.814.610.715.313.57.811.15.76.55.32.62.52.12.01.52.1

ebsb:Consumer, us-gaap:FinancingReceivables60To89DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value0.1760.2810.2450.380.570.7090.7650.6640.6560.7190.5880.5820.4390.5620.5680.6640.4050.4520.3920.3950.4470.240.3170.4450.4060.527
Percentage of FinancingReceivableRecordedInvestmentPastDue1.210.37.410.310.813.624.013.315.311.78.59.26.611.38.610.65.54.83.83.31.81.01.11.51.32.1

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:FinancingReceivables30To59DaysPastDue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value131.0171.3421.5742.752.5451.3352.751.131.2632.6781.86