IBOC


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:CapitalToRiskWeightedAssets
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:ProductOrService
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:PropertyPlantAndEquipmentNet

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

us-gaap:OtherAssets

us-gaap:StockholdersEquity
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

iboc:AccretionOfDiscountsInvestments

iboc:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned

iboc:AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure

iboc:AmortizationOfInvestmentSecuritiesPremiums

iboc:DistributionsFromOtherInvestments

iboc:IncreaseDecreaseInNoninterestBearingDemandDeposits

iboc:IncreaseDecreaseInSavingAndInterestBearingDemandDeposits

iboc:InvestmentSecuritiesPurchasesNotYetSettled

iboc:MaximumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital

iboc:MinimumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierTwoCapital

iboc:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment
us-gaap:StatementEquityComponents

iboc:TransferFromBankPremiseAndEquipmentToOtherAssets

us-gaap:AdvertisingExpense

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DepreciationNonproduction

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

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

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

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInTimeDeposits

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits

us-gaap:InterestExpenseOtherDomesticDeposits

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseTimeDeposits

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:LaborAndRelatedExpense

us-gaap:NoninterestExpense

us-gaap:NoninterestIncome

us-gaap:NoninterestIncomeOther

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OccupancyNet

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherNoninterestExpense

us-gaap:OtherRealEstateCoveredValuationAdjustments

us-gaap:OtherRevenueExpenseFromRealEstateOperations

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments

us-gaap:ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale

us-gaap:ProceedsFromSaleOfOtherRealEstate

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProfessionalFees

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:TransferToOtherRealEstate

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
iboc:AmountOfLoansApprovedAndClosed
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:SubsequentEventType

iboc:CapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital
us-gaap:FairValueByMeasurementFrequency
iboc:ChangeInProvisionOfImpairedFinancingReceivableFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency, us-gaap:InternalCreditAssessment
us-gaap:FairValueByMeasurementFrequency
iboc:ChangeInProvisionOfOtherRealEstateAndForeclosedAssetsInUse
us-gaap:FairValueByMeasurementBasis
iboc:EquitySecuritiesAndAvailableForSaleDebtSecurities

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesAmortizedCostBasis

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedGains

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedLosses
us-gaap:FairValueByFairValueHierarchyLevel
iboc:FederalHomeLoanBankAdvancesLongTermFairValueDisclosure

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
iboc:FinancingReceivableWatchListDoubtfulLoansRecordedInvestmentFairValueDisclosure
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

iboc:FinancingReceivableWithPaymentDeferrals
us-gaap:SubsequentEventType

iboc:ImpairedCollateralDependentCommercialLoansWithInternalEvaluationCompletedWithinLastTwelveMonths

iboc:ImpairedCommercialCollateralFinancingReceivableAppraisalsToDetermineFairValue

iboc:ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InternalCreditAssessment
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:InternalCreditAssessment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
iboc:OtherRealEstateAndForeclosedAssetsInUse
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

iboc:PercentageOfAdvancesFromFederalHomeLoanBanksIncreaseDecrease
us-gaap:SubsequentEventType
iboc:PercentageOfLoanPaymentsOnDeferralPeriod
us-gaap:SubsequentEventType
iboc:PercentageOfLoanSortOfDeferralProgramForRelief

us-gaap:AdvancesFromFederalHomeLoanBanks
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:PledgedStatus

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:CashSurrenderValueOfLifeInsurance

us-gaap:CommonEquityTierOneCapitalRatio

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:PledgedStatus
us-gaap:DebtSecuritiesAvailableForSaleRestricted

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DepositsFairValueDisclosure

us-gaap:DividendsPayableCurrentAndNoncurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FederalHomeLoanBankAdvancesLongTerm

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

us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableModificationsRecordedInvestment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

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

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

us-gaap:HeldToMaturitySecurities
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:FinancialInstrument

us-gaap:HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost

us-gaap:HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost

us-gaap:InterestBearingDepositLiabilities

us-gaap:InterestReceivable

us-gaap:JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
us-gaap:DebtInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableWithFixedRatesOfInterest1

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

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:NotesReceivableGross
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:NotesReceivableNet

us-gaap:OtherLiabilities

us-gaap:OtherLongTermInvestments

us-gaap:SecuritiesSoldUnderAgreementsToRepurchase
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockholdersEquityBeforeTreasuryStock

us-gaap:TierOneLeverageCapitalToAverageAssets

us-gaap:TimeDeposits
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:TreasuryStockCommonValue

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Interest Expense
Balance Sheet
Goodwill
Assets
Other Assets
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Goodwill
Liabilities
Dividends Payable Current And Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Gain Loss On Sale Of Property Plant Equipment
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock Cash
BanksAndOrInsurance
Interest And Dividend Income Operating
LiabilitiesBanks
Deposits

Tables

  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██▇▇▇▇▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁96.33296.31296.23496.22996.22696.21596.19296.15196.13796.10496.08396.06696.04496.01996.00395.99795.9795.9195.88895.88195.87695.86695.85795.82595.78795.78495.77495.76695.75295.74495.73695.7395.72695.72595.72495.72395.72195.7295.7295.71895.71895.711NANANA
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock██▆▆▆▅▅▄▄▃▂▂▂▁96.33296.31296.23496.22996.22696.21596.19296.15196.13796.10496.08396.06696.04496.019NANANANANANANANANANANANANANANA95.744NANANA95.725NANANA95.72NANANA95.711NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▂▁▁▁█63.51855663.41970663.38629263.39719965.228824NA65.63611665.86723465.831162NA66.42320966.93211366.863895NA66.7453566.71517166.747499NA66.29155666.15910566.118082NA66.66184166.68413666.555392NA67.01693767.0713767.272299NA67.33344267.29205367.279981NA67.30170167.32391267.355427NA67.46988967.68978467.779608NA67.88069468.16386468.205891
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁▁▁▁█63.36281763.30745563.26996663.29559765.070589NA65.44915965.6480965.617977NA66.13609166.11449766.092379NA66.06082966.05374165.994201NA65.94881565.9442266.014114NA66.44997466.42472366.416252NA66.86099766.92566467.130971NA67.19784767.19079267.187583NA67.22570167.24400567.271146NA67.42385767.62822367.701315NA67.82245568.06389968.10394
us-gaap:EarningsPerShareBasic █▄▃▃▂▄▄▄▄▅▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▃▂▂▃▃▂▂▂▁▁▁▂▂▂▂▂▁▂▂▂1.450.80.680.660.540.790.790.760.790.89000000000000010.770.80.810.67999999999999990.60.610.480.53999999999999980.540.450.50.530.480.510.540.580.50.560.650.57999999999999980.470.410.420.329999999999999850.330.320.420.40999999999999990.410.430.450.39999999999999990.450.450.42
us-gaap:EarningsPerShareDiluted █▄▃▃▂▄▄▄▄▅▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▃▂▃▃▃▂▂▂▁▁▁▂▂▂▂▂▂▂▂▂1.450.80.670.650.530.790.780.760.790.88000000000000030.770.790.80.67999999999999990.590.610.480.530.540.450.50.520.480.510.540.570.50.560.650.57999999999999980.470.410.420.329999999999999850.330.310.420.40999999999999990.40.430.450.39999999999999990.450.450.42
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets ███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2.066e-052.044e-051.977e-051.978e-071.945e-071.98e-071.92e-071.904e-071.9709999999999998e-071.906e-071.891e-071.932e-071.8740000000000002e-071.873e-071.857e-071.866e-071.878e-071.868e-071.855e-071.902e-071.864e-071.869e-071.791e-071.819e-071.7829999999999998e-071.934e-071.9109999999999998e-071.945e-071.9220000000000001e-071.933e-071.9370000000000002e-071.958e-072.031e-071.9650000000000002e-072.177e-072.3119999999999998e-072.308e-072.273e-072.2090000000000003e-072.123e-07NA1.9470000000000002e-07NANANA
us-gaap:CapitalToRiskWeightedAssets ███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2.175e-052.1579999999999997e-052.096e-052.0780000000000002e-072.036e-072.046e-071.985e-071.967e-072.046e-071.9739999999999998e-071.959e-072.004e-071.951e-071.951e-071.9370000000000002e-071.944e-071.956e-071.9470000000000002e-071.935e-071.981e-071.943e-071.954e-071.872e-071.896e-071.867e-072.0239999999999999e-072.011e-07NA2.0239999999999999e-072.036e-072.0399999999999997e-072.059e-072.136e-072.06e-072.293e-072.429e-072.433e-072.399e-072.3339999999999999e-072.248e-07NA2.072e-07NANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:EmployeeStockOption▂▃▄▄▅▆▆▆▇▇▇▇▄▅▅▅▇▇▇▇▇███████▃▁▁▁▂▂▂0.1140.1590.1760.1760.2190.2360.240.2390.2650.280.2850.2850.18480.2040.2150.2160.2680.260.2680.2690.2850.30.2890.2910.2920.2920.3010.3040.1610.0920.1010.1070.1140.1080.113NANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax █▅▅▄█▅▆▇▇█▅▅▄▄▅▅▅▂▄▅▆▃▅▃▆▅▄▇▆▃▅▁▄▃▄▅▄▄▅▇▅▂▅▆▄92.50547.75933.84118.47696.84549.51660.25975.17377.13599.09335.43441.713.46723.37739.99647.59344.77-23.15926.74540.00461.47910.97649.6559.02357.84249.81822.95171.8363.7248.84633.33-37.73912.4788.12424.86331.85723.69419.80739.76887.25736.499-10.00733.9750.2718.689
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▃▂▂▂▃▄▃▃▄▃▄▄▃▃▃▂▂▂▂▂▂▂▂▃▃▂▃▃▃▂▁▁▁▁▁▂▂▂▂▂▂▂▂▂118.11663.86953.10752.55344.15565.29665.57163.9265.16773.17265.0366.70567.67659.6860.01653.82248.12451.82350.65944.40250.11951.36648.88351.87154.72558.98549.89356.88464.17656.61647.09741.27337.60438.70138.56936.26444.86645.52845.79549.2550.65453.32547.02651.94448.686
us-gaap:IncomeTaxExpenseBenefit █▃▁▂▁▃▃▃▃▃▃▃▃▃▆▃▄▄▃▃▄▄▄▅▅▆▄▅▆▄▃▃▁▃▂▂▃▃▃▄▄▇▃▅▄26.0913.09810.36511.0449.31713.56214.12713.913.26114.64313.93513.81814.25614.44520.38813.25316.1216.3514.87214.71417.13516.39316.86417.99618.86320.43216.6619.16520.5317.67315.27113.769.53512.98112.69111.71413.17915.15515.16416.62617.13322.90513.47717.93616.64
us-gaap:IncomeTaxesPaidNet NANA34.4560.1640.2065.49810.727NANA0.8511.767NANA12.54119.501NANA8.43615.314NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestAndFeeIncomeLoansAndLeases ▆▆▆▇▇▇███▇▆▆▅▄▄▄▃▃▃▃▃▃▃▃▂▃▂▂▂▂▁▁▁▁▂▂▂▂▂▃▃▃▃▄▄91.81692.11490.61497.76499.23100.554104.688105.564102.80599.42995.82892.08387.83384.24783.39479.46675.40174.57574.38874.60674.25174.73777.17672.92772.44372.61271.02670.03667.87268.39466.48264.61763.53465.59867.25467.41368.32370.79972.46174.57474.6877.78577.03778.76680.614
us-gaap:InterestExpense ▁▁▁▂▃▃▃▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▄▄▅▅▅▆▆▇▇▇██6.6716.8658.179.79613.76913.99614.90115.07814.65414.2413.512.79312.13510.8959.9938.7979.24610.11311.17511.02410.81710.7311.13311.2111.24411.46111.57511.63411.87313.44713.00713.714.47816.37417.4220.0420.66521.48123.07924.43325.30526.56427.90229.64329.927
us-gaap:InterestIncomeExpenseNet ▄▄▄▇▆▆███▇▇▆▆▅▅▅▄▃▃▄▃▄▄▄▄▄▃▄▃▃▂▁▁▂▂▁▁▂▂▃▃▃▃▃▄91.30891.00991.813103.854102.843103.363109.218111.782109.409106.735104.874102.27399.27297.14196.95294.37787.73586.22485.44986.87286.2487.19389.59187.76587.89187.20386.38387.70685.76484.68678.64372.62472.63276.02576.35573.64375.11778.03880.54483.41181.83385.04786.35383.43789.895
us-gaap:InterestPaidNet ▃▃▄▄▄▄▅▅▄▄▇▁▄█▁▁▄▄▄6.0077.98410.32510.20213.35313.46614.6614.6213.98213.57225.458-0.45912.05229.26-0.507-0.16910.41110.72410.138NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss █▄▃▃▂▄▄▄▄▅▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▃▂▂▁▁▁▁▁▂▂▂▂▂▂▂92.02650.77142.74241.50934.83851.73451.44450.0251.90658.52951.09552.88753.4245.23539.62840.56932.00435.47335.78729.68832.98434.9732.01933.87535.86238.55433.23337.71943.64638.94331.82627.51328.06925.7225.87824.5531.68730.37330.63132.62433.52130.4233.549NANA
us-gaap:ProfitLoss █▃▂▂▁▃▃▃▃▄▃▃▃▃▂▂▁▁92.02650.77142.74241.5134.83851.73451.44450.0251.90658.52951.09552.88753.4245.23539.62840.56932.00435.473NANANANANANANANANANANANANANANANANANANANANA32.62433.521NANA34.00832.046
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService iboc:OtherServiceChargesCommissionsAndFeesBanking▆▄█▂▂▆█▃▂▂▅▂▂▁▅▂▁13.23312.18314.47111.22911.16613.64814.70811.76410.87611.31113.111.15211.12210.45913.09511.02510.385NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService iboc:OtherServiceChargesCommissionsAndFeesNonbanking▇▂▄▅▃▅▅▆▂█▄▅▁▇▄▄▁2.3451.441.82.031.7542.072.0152.2381.5092.5281.8852.0281.362.2931.8531.8641.335NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService iboc:ServiceChargesOnDepositAccounts▄▃▄▁▇██▆▆█▇▆▇▇█▇▇15.77414.90315.03712.8817.63718.90918.72317.6117.2618.77518.39117.55517.71218.37418.70617.88217.906NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▇▅▄▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▂▂▃▂▂▃▂▂▂▁▁▂▂▁▂▁▁▂▂▂15311.00514921.53313591.77413324.52212506.40912112.89411966.03512227.01612027.70311871.95211845.50111988.99512070.61212184.69812173.65112035.22211965.85811804.04111937.41311776.6411878.68911772.86912052.21712074.12912374.40212196.5212079.18712436.46712144.18512079.47712076.65811596.91311520.17211882.67312116.7411555.99611811.66111739.64911593.85611820.34312195.54311943.469NANANA
us-gaap:Liabilities █▇▄▄▂▁▁▂▁▁▁▁▂▂▂▂▂▁▂▁▂▁▂▂▃▃▂▃▃▃▃▂▁▂▂▁▂▂▁▂▃▂13025.33512728.92811450.71911182.66210363.8989994.8419898.11110166.69710042.9999932.379986.65610109.26510239.35410345.71810358.46710238.5310217.29910079.37410190.12910036.01610178.39210107.36610394.5810445.88210756.06110615.86210541.57710900.35210678.26910655.06910661.30710199.61910085.29810446.96510511.3999919.81510204.3710139.48410010.80410258.2810715.18110484.252NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▅▄▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▂▂▃▂▂▃▂▂▂▁▁▂▂▁▂▁▁▂▂▂15311.00514921.53313591.77413324.52212506.40912112.89411966.03512227.01612027.70311871.95211845.50111988.99512070.61212184.69812173.65112035.22211965.85811804.04111937.41311776.6411878.68911772.86912052.21712074.12912374.40212196.5212079.18712436.46712144.18512079.47712076.65811596.91311520.17211882.67312116.7411555.99611811.66111739.64911593.85611820.34312195.54311943.469NANANA
us-gaap:StockholdersEquity █▇▇▇▇▇▆▆▆▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁▁▁▁▃▃▃▃▂2285.672192.6052141.0552141.862142.5112118.0532067.9242060.3191984.7041939.5821858.8451879.731831.2581838.981815.1841796.6921748.5591724.6671747.2841740.6241700.2971665.5031657.6371628.2471618.3411580.6581537.611536.1151465.9161424.4081415.3511397.2941434.8741435.7081605.3411636.1811607.2911600.1651583.052NANA1459.217NANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue █▇▄▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁▂2326.881967.771249.3961198.206354.708256.82286.519321.119349.164316.797285.664265.122254.622265.357290.575316.921297.805269.198248.897245.351258.47273.053241.682260.392278.396255.146303.57451.695351.287274.785302.514238.924234.959283.1260.091219.907551.044261.885229.439221.922302.87197.814213.884244.301376.82
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents █▇▄▄▁▁▁▁▁▁▁▁▁▁▁2326.881967.771249.3961198.206354.708256.82286.519321.119349.164316.797285.664265.122254.622265.357290.575NANA269.198NANANA273.053NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentNet ▂▃▄▅▅▆▆▆▆▆▆▆▇▇▇▇██▆▆▇▇▇████▇▆▆▅▄▄▄▁▁▁▁▁▂▂▂463.521471.823486.601491.998494.697506.595507.945505.696504.581506.899510.493511.337511.696514.454516.786522.003524.652527.583510.649511.485515.477516.716521.499525.1527.35526.423524.384518.71510.583504.842492.375484.345480.828481.287453.304454.433455.145453.05456.738460.933464.104468.95NANANA
us-gaap:EquitySecuritiesFvNi ▆▆██▆▅▇▆▅▁▃6.1366.1256.1826.1946.1256.0956.1726.1276.0755.9376.013NANA27.885NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity █▇▇▇▇▇▆▆▆▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁▁▁▁▃▃▃▃▂2285.672192.6052141.0552141.862142.5112118.0532067.9242060.3191984.7041939.5821858.8451879.731831.2581838.981815.1841796.6921748.5591724.6671747.2841740.6241700.2971665.5031657.6371628.2471618.3411580.6581537.611536.1151465.9161424.4081415.3511397.2941434.8741435.7081605.3411636.1811607.2911600.1651583.052NANA1459.217NANANA
us-gaap:CommonStockValue ██▇▇▇▇▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁96.33296.31296.23496.22996.22696.21596.19296.15196.13796.10496.08396.06696.04496.01996.00395.99795.9795.9195.88895.88195.87695.86695.85795.82595.78795.78495.77495.76695.75295.74495.73695.7395.72695.72595.72495.72395.72195.7295.7295.71895.71895.711NANANA
us-gaap:AdditionalPaidInCapital ▃▃▂▂▂▂▂▁▁▁▁█████▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅151.512150.972149.034148.744148.508148.075147.456146.614146.113145.283144.66173.057172.416171.816171.358171.056170.519169.567169.039168.687168.367167.98167.567166.706165.862165.52165.088164.681164.22163.947163.744163.567163.413163.287163.173163.05162.907162.767162.66162.575162.479162.276NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁2397.612305.5842241.3972233.4552191.9462200.5682148.8352133.2392083.2182064.1342005.6061982.4641923.4111891.8051846.571828.7431788.1741777.9631742.4911727.1481697.4611683.61648.631635.8681601.9921585.3891546.8411531.6241493.9041467.01428.0571411.6871384.1731369.5431347.8921339.0531317.8571302.9641275.9261261.4031232.0951214.743NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▅▆▆▇▅▅▄▃▂▁▂▂▃▄▄▄▄▆▆▆▅▅▅▆▅▄▅▄▃▄▄▆▇██▇███▆▆18.29217.81332.41841.31964.3522.3454.563-4.252-29.405-54.634-95.184-79.537-68.35-28.397-6.539-6.907-13.931-26.69731.93540.97730.6622.16726.1618.52533.37711.3970.13310.415-23.696-43.774-13.677-15.18150.07165.66283.25884.27376.96684.95995.52586.38831.75528.777NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁▃▄▄▅▆▆▆▇███▄0.1140.1590.1760.1760.2190.2360.240.2390.2650.280.2850.2850.185NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅█▆▆▄█▇▄▅▄▆▃▄▁▅▃▅▃▄70.49395.50578.33579.89156.621100.37885.7757.71967.69851.11776.51349.0453.17722.29670.50939.6264.39446.51353.552NANANANANANANANANANANANANANANANANANANANA34.35360.13NANA20.75575.5
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▁▅▆▅▅█▅▆▇█▇▇▆▅▆▆▇▅-98.768-861.92-286.841-36.374-245.331-225.736216.946-220.137-89.13148.526147.72499.08584.105-60.776-203.166-14.785-125.0852.716-184.385NANANANANANANANANANANANANANANANANANANANA-11.60360.758NANA-619.5771016.178
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅█▅█▅▄▁▄▃▃▂▂▂▃▄▃▄▃▄387.385736.947259.696799.981286.59895.659-337.316134.37353.8-68.51-203.695-137.625-148.01713.262106.311-5.71989.293-78.928134.379NANANANANANANANANANANANANANANANANANANANA-103.698-15.832NANA466.303-939.496
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▁▂█▂▁▁▁▂▂▁▁▁▁359.11-29.46851.19843.49897.888-29.699-34.6-28.04532.36731.13320.54210.5-10.735-25.218NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▅▅▅▅▁▆▅▆▅▇▆▆▆▇▅▅▆▆█▅▆▅▆▆▅▆▅▅▅▆▆▅▅▇▅▆▆▅▆▅▅█▅▆▂-0.757-0.064-2.582-0.738-14.1232.979-0.4342.199-1.4353.771.010.0940.2694.596-0.238-0.0170.2290.5546.366-0.8641.25-1.6061.1561.533-1.4151.966-0.91-0.417-1.6660.5060.949-1.176-2.0985.656-0.6021.7781.091-3.0653.049-0.848-1.4357.823-0.9811.136-11.51
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅█▆▆▄█▇▄▅▄▆▃▄▁▅▃▅▃▄70.49395.50578.33579.89156.621100.37885.7757.71967.69851.11776.51349.0453.17722.29670.50939.6264.39446.51353.552NANANANANANANANANANANANANANANANANANANANA34.35360.13NANA20.75575.5
us-gaap:NetIncomeLoss █▄▃▃▂▄▄▄▄▅▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▃▂▂▁▁▁▁▁▂▂▂▂▂▂▂92.02650.77142.74241.50934.83851.73451.44450.0251.90658.52951.09552.88753.4245.23539.62840.56932.00435.47335.78729.68832.98434.9732.01933.87535.86238.55433.23337.71943.64638.94331.82627.51328.06925.7225.87824.5531.68730.37330.63132.62433.52130.4233.549NANA
us-gaap:ProfitLoss █▃▂▂▁▃▃▃▃▄▃▃▃▃▂▂▁▁92.02650.77142.74241.5134.83851.73451.44450.0251.90658.52951.09552.88753.4245.23539.62840.56932.00435.473NANANANANANANANANANANANANANANANANANANANANA32.62433.521NANA34.00832.046
us-gaap:ShareBasedCompensation ▂▃▄▄▅▆▆▆▇▇▇▇▄▅▅▅▇▇▇▇▇███████▃▁▂▂▂▂▂▂▂▂▁▁▂▂▃▃▃0.1140.1590.1760.1760.2190.2360.240.2390.2650.280.2850.2850.1850.2040.2150.2160.2680.260.2680.2690.2850.30.2890.2910.2920.2920.3010.3040.1610.0920.1010.1070.1140.1080.1130.1220.1310.1070.0850.0930.1020.1030.1340.1450.152
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▁▅▆▅▅█▅▆▇█▇▇▆▅▆▆▇▅-98.768-861.92-286.841-36.374-245.331-225.736216.946-220.137-89.13148.526147.72499.08584.105-60.776-203.166-14.785-125.0852.716-184.385NANANANANANANANANANANANANANANANANANANANA-11.60360.758NANA-619.5771016.178
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▁▁▁▁▁▂▂▂▂▂▂▂▁▁▁▁▁▆▂▁▂▁▁▁▂▂▃▃▃▄▃▃▂█▂▂▃▂▂▂▁▂▁▁▂2.6451.6141.6521.8242.7695.7819.48.2796.135.1395.9826.7553.5194.0122.6883.6533.96226.2765.422.2194.9414.0013.8474.1777.8068.27113.24314.4114.43619.22414.47110.1556.16638.386.3687.7169.5666.9434.4324.7924.2264.712.693.8974.656
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅█▅█▅▄▁▄▃▃▂▂▂▃▄▃▄▃▄387.385736.947259.696799.981286.59895.659-337.316134.37353.8-68.51-203.695-137.625-148.01713.262106.311-5.71989.293-78.928134.379NANANANANANANANANANANANANANANANANANANANA-103.698-15.832NANA466.303-939.496
us-gaap:PaymentsOfDividendsCommonStock ▁█▁0.034.8130.0NANA35.849-0.001NANA27.7840.001NANA21.8010.0NANA20.4460.0NANA19.2560.001NANA18.0210.0NANA15.4560.0NANA13.4440.0NANA12.7840.001NANA12.8660.0NANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▆█▁▅▁▁▆▁0.00.0480.14119.36629.3710.02817.6890.0740.05418.9850.0NANA0.0550.0110.0240.0970.0070.00.07.9593.5321.9010.01.2457.2063.8552.1075.755NANANANA0.6240.121NANA0.1023.382NANA0.4563.83NANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value9696969696969696969696969696969695959595959595959595959595959595959595959595959595959595
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.70.70.70.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.8

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value96969696969696969696969696969695959595959595
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value6363636365656565666666666666666666666666676767676767676767676767676868
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value6363636365656565666666666665656566666666666667676767676767676767676868
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.450.80.680.660.540.790.790.760.790.890.770.80.810.680.60.610.480.540.540.450.50.530.480.510.540.580.50.560.650.580.470.410.420.330.330.320.420.410.410.430.450.40.450.450.42
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.450.80.670.650.530.790.780.760.790.880.770.790.80.680.590.610.480.530.540.450.50.520.480.510.540.570.50.560.650.580.470.410.420.330.330.310.420.410.40.430.450.40.450.450.42
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Tier One Risk Based Capital To Risk Weighted Assets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets


Tier
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-07-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value20.6620.4420.2519.770.19780.19450.1980.1920.19040.19710.19060.18910.19320.18740.18730.18570.18660.18780.18680.18550.19020.18640.18690.17910.18190.17830.19340.19110.19450.19220.19330.19370.060.19580.20310.19650.21770.23120.23080.22730.22090.21230.1947
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Capital To Risk Weighted Assets

us-gaap:CapitalToRiskWeightedAssets

us-gaap:CapitalToRiskWeightedAssets


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value21.7521.5821.420.960.20780.20360.20460.19850.19670.20460.19740.19590.20040.19510.19510.19370.19440.19560.19470.19350.19810.19430.19540.18720.18960.18670.20240.20110.20240.20360.2040.20590.21360.2060.22930.24290.24330.23990.23340.22480.2072
Percentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:EmployeeStockOption


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value114000.0159000.0176000.0176000.0219000.0236000.0240000.0239000.0265000.0280000.0285000.0285000.0184800.0204000.0215000.0216000.0268000.0260000.0268000.0269000.0285000.0300000.0289000.0291000.0292000.0292000.0301000.0304000.0161000.092000.0101000.0107000.0114000.0108000.0113000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.10.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.30.30.30.30.20.10.10.10.10.10.1
Percentage of InterestAndDividendIncomeOperating us-gaap:EmployeeStockOption0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9247331896496075779935411323394744-23.15926406110499.02357492271638.84633-37.739128.12424312319398736-10.007335018
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating94.448.833.816.383.042.248.559.362.281.929.936.212.121.637.446.146.2-24.027.740.963.311.249.39.158.350.523.472.365.39.036.4-43.714.38.826.534.024.719.938.480.934.1-9.029.744.515.6

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1186353524465656365736566675960534851504450514851545849566456474137383836444545495053475148
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating120.665.353.146.237.955.652.850.452.560.554.958.060.755.256.152.249.653.852.445.451.652.548.552.455.259.850.957.365.757.751.447.843.241.941.138.746.845.744.245.747.347.841.245.940.6

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value261310119.3171314131314131314142013161614141716161718201619201715139.535121211131515161722131716
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating26.613.410.49.78.011.611.411.010.712.111.812.012.813.419.112.816.617.015.415.017.716.716.718.219.020.717.019.321.018.016.715.910.914.013.512.513.815.214.615.416.020.511.815.913.9

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-30
Value340.1640.2065.498100.851112198.43615
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating34.50.10.24.78.60.79.911.618.28.815.8

Interest And Fee Income Loans And Leases

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9192909799100104105102999592878483797574747474747772727271706768666463656767687072747477777880
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.794.190.686.085.185.784.383.282.982.281.080.078.878.078.077.077.777.477.076.276.576.376.673.773.173.672.570.569.569.772.574.972.971.071.772.071.371.169.969.169.769.767.469.767.3

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.6716.8658.179.796131314151414131212109.9938.7979.24610111110101111111111111113131314161720202123242526272929
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating6.87.08.28.611.811.912.011.911.811.811.411.110.910.19.38.59.510.511.611.311.111.011.111.311.311.611.811.712.213.714.215.916.617.718.621.421.621.622.322.723.623.824.426.225.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value919191103102103109111109106104102999796948786858686878987878786878584787272767673757880838185868389
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.293.091.891.488.288.188.088.188.288.288.688.989.189.990.791.590.589.588.488.788.989.088.988.788.788.488.288.387.886.385.884.183.482.381.478.678.478.477.777.376.476.275.673.875.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value6.0077.984101013131414131325-0.4591229-0.507-0.169101010
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating6.18.210.39.011.511.511.811.511.311.221.5-0.410.827.1-0.5-0.210.711.110.5

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value92504241345151505158515253453940323535293234323335383337433831272825252431303032333033
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.951.942.736.529.944.141.439.441.848.443.246.048.041.937.139.333.036.837.030.334.035.731.834.236.239.133.938.044.739.734.731.932.227.827.626.233.130.529.630.331.327.329.4

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value92504241345151505158515253
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.951.942.736.529.944.141.439.441.848.443.246.048.0
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value92504241345151505158515253453940323532333432
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.951.942.736.529.944.141.439.441.848.443.246.048.041.937.139.333.036.830.331.330.126.7

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

iboc:OtherServiceChargesCommissionsAndFeesBanking


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1312141111131411101113111110131110
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating13.512.414.59.99.611.611.89.38.89.311.19.710.09.712.210.710.7
Percentage of InterestAndDividendIncomeOperating iboc:OtherServiceChargesCommissionsAndFeesBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

iboc:OtherServiceChargesCommissionsAndFeesNonbanking


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.3451.441.82.031.7542.072.0152.2381.5092.5281.8852.0281.362.2931.8531.8641.335
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.711.812.418.115.715.213.719.013.922.314.418.212.221.914.216.912.9
Percentage of InterestAndDividendIncomeOperating2.41.51.81.81.51.81.61.81.22.11.61.81.22.11.71.81.4
Percentage of InterestAndDividendIncomeOperating iboc:OtherServiceChargesCommissionsAndFeesNonbanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

iboc:ServiceChargesOnDepositAccounts


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1514151217181817171818171718181717
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax119.2122.3103.9114.7158.0138.5127.3149.7158.7166.0140.4157.4159.3175.7142.8162.2172.4
Percentage of InterestAndDividendIncomeOperating16.115.215.011.315.116.115.113.913.915.515.515.315.917.017.517.318.5
Percentage of InterestAndDividendIncomeOperating iboc:ServiceChargesOnDepositAccounts0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1531114921140291359113324125061211211966122271202711871118451198812070121841217312035119651180411937117761187811772120521207412374121961207912436121441207912076115961152011882121161155511811117391159311820121951194311762
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value13025127281185111450111821036399949898101661004299329986101091023910345103581023810217100791019010036101781010710394104451075610615105411090010678106551066110199100851044610511991910204101391001010258107151048410355
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets85.185.384.584.283.982.982.582.783.183.583.784.384.384.884.985.185.185.485.485.485.285.785.986.286.586.987.087.387.687.988.288.388.087.587.986.885.886.486.486.386.887.987.888.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1531114921140291359113324125061211211966122271202711871118451198812070121841217312035119651180411937117761187811772120521207412374121961207912436121441207912076115961152011882121161155511811117391159311820121951194311762
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value2285219221772141214121422118206720601984193918581879183118381815179617481724174717401700166516571628161815801537153614651424141513971434143516051636160716001583145914071257
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.914.715.515.816.117.117.517.316.916.516.315.715.715.215.114.914.914.614.614.614.814.314.113.813.513.113.012.712.412.111.811.712.012.512.113.214.213.613.613.712.212.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-31
Value-8.333-8.333-8.332
Percentage of StockholdersEquity-0.4-0.4-0.4
Percentage of Assets-0.1-0.1-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.00.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2020-09-302020-06-302020-03-31
Value-8.333-8.333-8.332
Percentage of StockholdersEquity-0.4-0.4-0.4
Percentage of Assets-0.1-0.1-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value1817203241642.3454.563-4.252-29.405-54.634-95.184-79.537-68.35-28.397-26.6972.16711-43.7746584286518
Percentage of StockholdersEquity0.80.81.01.51.93.00.10.2-0.2-1.5-2.8-5.1-4.2-3.7-1.5-1.50.10.7-3.14.65.32.04.71.4
Percentage of Assets0.10.10.10.20.30.50.00.0-0.0-0.2-0.5-0.8-0.7-0.6-0.2-0.20.00.1-0.40.60.70.20.60.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value151150149149148148148147146146145144173172171169167165163163162162161158
Percentage of StockholdersEquity6.66.96.97.06.96.97.07.17.17.47.57.89.29.49.39.810.110.511.511.410.211.111.512.6
Percentage of Assets1.01.01.11.11.11.21.21.21.21.21.21.21.41.41.41.41.41.41.41.41.41.41.40.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value969696969696969696969696969696959595959595959595
Percentage of StockholdersEquity4.24.44.44.54.54.54.54.74.74.85.05.25.15.25.25.65.86.16.76.76.06.66.87.6
Percentage of Assets0.60.60.70.70.70.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value239723052289224122332191220021482133208320642005198219231891177716831585146713691302121411221016
Percentage of StockholdersEquity104.9105.2105.1104.7104.3102.3103.9103.9103.5105.0106.4107.9105.5105.0102.9103.1101.1100.3103.095.481.483.279.780.8
Percentage of Assets15.715.516.316.516.817.518.218.017.417.317.416.916.515.915.515.114.313.012.111.511.110.29.50.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockCommon


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value-378.076-378.076-378.028-378.028-377.887-358.521-329.15-329.122-311.433-311.359-311.305-292.32-292.32-292.263-292.263-292.076-284.11-277.432-258.509
Percentage of StockholdersEquity-16.5-17.2-17.4-17.7-17.6-16.7-15.5-15.9-15.1-15.7-16.1-15.7-15.6-16.0-15.9-16.9-17.1-17.6-18.1
Percentage of Assets-2.5-2.5-2.7-2.8-2.8-2.9-2.7-2.8-2.5-2.6-2.6-2.5-2.4-2.4-2.4-2.5-2.4-2.3-2.1
Percentage of Assets us-gaap:TreasuryStockCommon0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value23261967199712491198354256286321349316285265254265290316297269248245258273241260278255303451351274302238234283260219551261229221302197213244376224298346
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.213.214.29.29.02.82.12.42.62.92.72.42.22.12.22.42.62.52.32.12.12.22.32.02.22.22.12.53.62.92.32.52.12.02.42.11.94.72.22.01.92.51.70.00.00.01.90.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value23261967199712491198354256286321349316285265254265290269273
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.213.214.29.29.02.82.12.42.62.92.72.42.22.12.22.42.32.3

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value463471479486491494506507505504506510511511514516522524527510511515516521525527526524518510504492484480481453454455453456460464468490
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.23.43.63.74.04.24.24.14.24.34.34.34.24.24.24.34.44.54.34.34.34.44.34.34.34.34.34.24.24.24.14.24.24.13.73.93.93.93.93.93.83.94.2

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6.1366.1256.2026.1826.1946.1256.0956.1726.1276.0755.9376.01327
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.10.10.10.10.10.10.2

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

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6.1366.1256.2026.1826.1946.1256.0956.1726.1276.0755.9376.01327
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.10.10.10.10.10.10.2
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:EstimateOfFairValueFairValueDisclosure us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6.1366.1256.2026.1826.1946.1256.0956.1726.1276.0755.9376.01327
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.10.10.10.10.10.10.2
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1601691621841972042002222322061901891811468179879195107110111114114126127130141148146158144149172179189201178161195199162165123
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.11.21.41.51.61.71.91.91.71.61.61.51.20.70.70.70.80.80.90.90.91.01.01.11.01.11.21.21.21.31.21.31.51.51.61.71.51.41.71.71.31.41.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value2285219221772141214121422118206720601984193918581879183118381815179617481724174717401700166516571628161815801537153614651424141513971434143516051636160716001583145914071257
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.914.715.515.816.117.117.517.316.916.516.315.715.715.215.114.914.914.614.614.614.814.314.113.813.513.113.012.712.412.111.811.712.012.512.113.214.213.613.613.712.212.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-31
Value-8.333-8.333-8.332
Percentage of StockholdersEquity-0.4-0.4-0.4
Percentage of Assets-0.1-0.1-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.00.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2020-09-302020-06-302020-03-31
Value-8.333-8.333-8.332
Percentage of StockholdersEquity-0.4-0.4-0.4
Percentage of Assets-0.1-0.1-0.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value1817203241642.3454.563-4.252-29.405-54.634-95.184-79.537-68.35-28.397-26.6972.16711-43.7746584286518
Percentage of StockholdersEquity0.80.81.01.51.93.00.10.2-0.2-1.5-2.8-5.1-4.2-3.7-1.5-1.50.10.7-3.14.65.32.04.71.4
Percentage of Assets0.10.10.10.20.30.50.00.0-0.0-0.2-0.5-0.8-0.7-0.6-0.2-0.20.00.1-0.40.60.70.20.60.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value151150149149148148148147146146145144173172171169167165163163162162161158
Percentage of StockholdersEquity6.66.96.97.06.96.97.07.17.17.47.57.89.29.49.39.810.110.511.511.410.211.111.512.6
Percentage of Assets1.01.01.11.11.11.21.21.21.21.21.21.21.41.41.41.41.41.41.41.41.41.41.40.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value969696969696969696969696969696959595959595959595
Percentage of StockholdersEquity4.24.44.44.54.54.54.54.74.74.85.05.25.15.25.25.65.86.16.76.76.06.66.87.6
Percentage of Assets0.60.60.70.70.70.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value239723052289224122332191220021482133208320642005198219231891177716831585146713691302121411221016
Percentage of StockholdersEquity104.9105.2105.1104.7104.3102.3103.9103.9103.5105.0106.4107.9105.5105.0102.9103.1101.1100.3103.095.481.483.279.780.8
Percentage of Assets15.715.516.316.516.817.518.218.017.417.317.416.916.515.915.515.114.313.012.111.511.110.29.50.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockCommon


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value-378.076-378.076-378.028-378.028-377.887-358.521-329.15-329.122-311.433-311.359-311.305-292.32-292.32-292.263-292.263-292.076-284.11-277.432-258.509
Percentage of StockholdersEquity-16.5-17.2-17.4-17.7-17.6-16.7-15.5-15.9-15.1-15.7-16.1-15.7-15.6-16.0-15.9-16.9-17.1-17.6-18.1
Percentage of Assets-2.5-2.5-2.7-2.8-2.8-2.9-2.7-2.8-2.5-2.6-2.6-2.5-2.4-2.4-2.4-2.5-2.4-2.3-2.1
Percentage of Assets us-gaap:TreasuryStockCommon0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value9696969696969696969696969696969695959595959595959595959595959595959595959595959595959595
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.70.70.70.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.8

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value151150149149148148148147146146145144173172171171171170169169168168167167166165165165164164163163163163163163163162162162162162162161
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.01.11.11.11.21.21.21.21.21.21.21.41.41.41.41.41.41.41.41.41.41.41.41.41.31.41.41.31.41.41.41.41.41.41.31.41.41.41.41.41.31.41.4

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value23972305228922412233219122002148213320832064200519821923189118461828178817771742172716971683164816351601158515461531149314671428141113841369134713391317130212751261123212141122
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.715.516.316.516.817.518.218.017.417.317.416.916.515.915.515.215.214.915.114.614.714.314.313.713.512.913.012.812.312.312.111.812.212.011.511.111.611.211.111.010.710.110.29.5

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1817203241642.3454.563-4.252-29.405-54.634-95.184-79.537-68.35-28.397-6.539-6.907-13.931-26.6973140302.167268.52533110.13310-23.696-43.774-13.677-15.1815065838476849586312865
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.20.30.50.00.0-0.0-0.2-0.5-0.8-0.7-0.6-0.2-0.1-0.1-0.1-0.20.30.30.30.00.20.10.30.10.00.1-0.2-0.4-0.1-0.10.40.60.70.70.70.70.80.70.30.20.6

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value114000.0159000.0176000.0176000.0219000.0236000.0240000.0239000.0265000.0280000.0285000.0285000.0185000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value114000.0159000.0176000.0177000.0219000.0236000.0240000.0239000.0265000.0280000.0285000.0285000.0185000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.6100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302011-06-302011-03-312010-06-302010-03-31
Value70957879561008557675176495322703964465334602075
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating71.997.678.370.348.685.569.145.554.642.364.642.647.720.665.938.466.448.355.431.956.118.463.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302011-06-302011-03-312010-06-302010-03-31
Value-98.768-861.92-286.841-36.374-245.331-225.736216-220.137-89.131481479984-60.776-203.166-14.785-125.0852-184.385-11.60360-619.5771016
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-100.8-880.6-286.9-32.0-210.4-192.3174.8-173.5-71.840.1124.886.175.5-56.3-190.0-14.3-129.054.7-190.8-10.856.7-547.9848.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302011-06-302011-03-312010-06-302010-03-31
Value38773625979928695-337.31613453-68.51-203.695-137.625-148.01713106-5.71989-78.928134-103.698-15.832466-939.496
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating395.4753.0259.7703.9245.881.5-271.8105.943.4-56.6-172.1-119.6-132.912.399.4-5.592.1-81.9139.1-96.2-14.8412.4-784.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value359-29.4685184397-29.699-34.6-28.04532312010-10.735-25.218
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating366.5-30.151.2742.283.9-25.3-27.9-22.126.125.717.49.1-9.6-23.3

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-757000.0-64000.0-2582000.0-738000.0-14123000.02979000.0-434000.02199000.0-1435000.03770000.01010000.094000.0269000.04596000.0-238000.0-17000.0229000.0554000.06366000.0-864000.01250000.0-1606000.01156000.01533000.0-1415000.01966000.0-910000.0-417000.0-1666000.0506000.0949000.0-1176000.0-2098000.05656000.0-602000.01778000.01091000.0-3065000.03049000.0-848000.0-1435000.07823000.0-981000.01136000.0-11510000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302011-06-302011-03-312010-06-302010-03-31
Value70957879561008557675176495322703964465334602075
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating71.997.678.370.348.685.569.145.554.642.364.642.647.720.665.938.466.448.355.431.956.118.463.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value92504241345151505158515253453940323535293234323335383337433831272825252431303032333033
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.951.942.736.529.944.141.439.441.848.443.246.048.041.937.139.333.036.837.030.334.035.731.834.236.239.133.938.044.739.734.731.932.227.827.626.233.130.529.630.331.327.329.4

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value92504241345151505158515253
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.951.942.736.529.944.141.439.441.848.443.246.048.0
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value92504241345151505158515253453940323532333432
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.951.942.736.529.944.141.439.441.848.443.246.048.041.937.139.333.036.830.331.330.126.7

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value114000.0159000.0176000.0176000.0219000.0236000.0240000.0239000.0265000.0280000.0285000.0285000.0185000.0204000.0215000.0216000.0268000.0260000.0268000.0269000.0285000.0300000.0289000.0291000.0292000.0292000.0301000.0304000.0161000.092000.0101000.0107000.0114000.0108000.0113000.0122000.0131000.0107000.085000.093000.0102000.0103000.0134000.0145000.0152000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302011-06-302011-03-312010-06-302010-03-31
Value-98.768-861.92-286.841-36.374-245.331-225.736216-220.137-89.131481479984-60.776-203.166-14.785-125.0852-184.385-11.60360-619.5771016
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-100.8-880.6-286.9-32.0-210.4-192.3174.8-173.5-71.840.1124.886.175.5-56.3-190.0-14.3-129.054.7-190.8-10.856.7-547.9848.1

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.6451.6141.6521.8242.7695.7819.48.2796.135.1395.9826.7553.5194.0122.6883.6533.962265.422.2194.9414.0013.8474.1777.8068.2711314141914106.166386.3687.7169.5666.9434.4324.7924.2264.712.693.8974.656
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302011-06-302011-03-312010-06-302010-03-31
Value38773625979928695-337.31613453-68.51-203.695-137.625-148.01713106-5.71989-78.928134-103.698-15.832466-939.496
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating395.4753.0259.7703.9245.881.5-271.8105.943.4-56.6-172.1-119.6-132.912.399.4-5.592.1-81.9139.1-96.2-14.8412.4-784.1

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value0.0340.035-0.001270.001210.0200.0190.001180.0150.0130.0120.001120.0
Percentage of PaymentsOfDividendsCommonStock0.0100.00.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value0.00.0480.14119290.028170.0740.054180.00.0550.0110.0240.0970.0070.00.07.9593.5321.9010.01.2457.2063.8552.1075.7550.6240.1210.1023.3820.4563.83
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value27.9727.9227.2427.2127.227.227.5527.1926.5126.3825.9125.6525.5320.5720.4120.3420.3220.019.4319.219.1919.1519.0819.018.7618.7518.9418.8618.9318.8315.9819.0619.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:AccretionOfDiscountsInvestments

iboc:AccretionOfDiscountsInvestments


Accretion
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value141000.0138000.0126000.0121000.0120000.0117000.0125000.0131000.055000.062000.076000.058000.075000.086000.088000.099000.0120000.0133000.0147000.0138000.0121000.0367000.0451000.0442000.0444000.0447000.0447000.0440000.01274000.01181000.01032000.0918000.0894000.0849000.0825000.0766000.0755000.0694000.0517000.0437000.0433000.0409000.0491000.0365000.0428000.0
Percentage of AccretionOfDiscountsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned

iboc:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned


Allowance
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
Value0.00.00.00.00.0180.0040.0780.0339.50.0510.00.0080.1380.0240.00.00.030.00.00.00.1490.232-0.3210.080.9370.00.0390.1540.1370.0370.165
Percentage of AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned0.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0100.00.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

iboc:AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure

iboc:AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1915000.0150000.0837000.0165000.00537000.0168000.066000.080000.08000.038000.0635000.02587000.071000.0380000.013000.0272000.045000.0235000.01546000.0523000.047000.0105000.0800000.0101000.017000.0226000.0133000.0100000.0138000.0726000.00548000.0-70000.0-1874000.01206000.0241000.0427000.01511000.0
Percentage of AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

iboc:AmortizationOfInvestmentSecuritiesPremiums

iboc:AmortizationOfInvestmentSecuritiesPremiums


Amortization
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1011117.5047.3736.8715.4384.2164.0244.4674.7635.1575.75.9725.4915.5567.0217.7316.8316.1796.1326.8037.1236.8577.2176.6336.5476.7846.7658.579111311106.9516.9046.4354.3943.7454.0836.145.3052.9662.4992.441
Percentage of AmortizationOfInvestmentSecuritiesPremiums100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:DistributionsFromOtherInvestments

iboc:DistributionsFromOtherInvestments


Distributions
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value572.201380.30626-7.774-3.4889.504460.774-5.8083.3355.36719-5.1180.914.5574.90814-0.224.1622.9864.9759.9890.343-5.15918-4.993101.298-15.95109.878-16.255-14.16112109.8169.948-1.38814-8.96-14.042-1.31245
Percentage of DistributionsFromOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:IncreaseDecreaseInNoninterestBearingDemandDeposits

iboc:IncreaseDecreaseInNoninterestBearingDemandDeposits


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value197506105751118-30.02521-3.81210323-5.25-2.334196-1.574-37.612-72.927197-51.092109-77.18276084-33.63610835125116314333-1.394-146.577-356.255-74.23228-136.582-124.235-56.42754-161.374-66.537-11.179
Percentage of IncreaseDecreaseInNoninterestBearingDemandDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:IncreaseDecreaseInSavingAndInterestBearingDemandDeposits

iboc:IncreaseDecreaseInSavingAndInterestBearingDemandDeposits


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1982621322672213-49.564-42.42378370.807-163.38148-8.25118-51.5688212133-67.8849739-34.305-124.0551132838-7.31740166-141.41234-1.413-182.39620218-215.514-82.53947-56.434-92.987-56.346-82.177
Percentage of IncreaseDecreaseInSavingAndInterestBearingDemandDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:InvestmentSecuritiesPurchasesNotYetSettled

iboc:InvestmentSecuritiesPurchasesNotYetSettled


Investment
Period End2021-03-312014-03-312013-03-312012-03-312011-03-312010-03-31
Value1003.079372638417
Percentage of InvestmentSecuritiesPurchasesNotYetSettled100.0100.0100.0100.0100.0100.0

iboc:MaximumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital

iboc:MaximumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital


Maximum
Period End2021-06-302021-03-312020-09-302019-09-302019-06-302019-03-31
Value025.024.75000.25
Percentage of MaximumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital0.0100.0100.00.00.0100.0

iboc:MinimumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierTwoCapital

iboc:MinimumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierTwoCapital


Minimum
Period End2021-06-302021-03-312020-09-302019-09-302019-06-302019-03-31
Value025.024.75000.25
Percentage of MinimumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierTwoCapital0.0100.0100.00.00.0100.0

iboc:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment

iboc:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.479-3.012-8.901-23.03362-2.2188.815252540-15.817-5.02-39.953
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.479-3.012-8.901-23.03362-2.2188.815252540-15.817-5.02-39.953
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:TransferFromBankPremiseAndEquipmentToOtherAssets

iboc:TransferFromBankPremiseAndEquipmentToOtherAssets


Transfer
Period End2020-09-302020-06-302020-03-31
Value0-3286000.07546000.0
Percentage of TransferFromBankPremiseAndEquipmentToOtherAssets0.0100.0100.0

us-gaap:AdvertisingExpense

us-gaap:AdvertisingExpense


Advertising
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.4561.4231.4131.8921.9841.5981.9872.0812.0822.0282.021.8081.8391.4062.0642.1162.2681.4691.9212.3192.1051.6981.8572.0232.0072.0291.9281.9551.831.371.7952.0231.8461.5071.7131.971.8270.3861.7941.841.7870.1692.482.4532.614
Percentage of AdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2021-02-172020-04-032019-10-152019-04-152018-10-162018-04-162017-10-162017-04-172016-10-172016-04-182015-10-152015-04-172014-10-152014-04-182013-10-152013-04-202013-04-192012-10-152012-10-312012-04-202012-04-302011-10-312011-04-30
Value0.550.550.550.50.420.330.330.330.310.290.270.290.270.250.230.20.20.20.20.20.20.190.19
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtAndEquitySecuritiesGainLoss


Debt
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0-4000.000-5000.00-2000.0-6000.0-4000.00-141000.0-3162000.0
Percentage of DebtAndEquitySecuritiesGainLoss0.0100.00.00.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain


Debt
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00000-1000.01000.01000.02000.002000.00000
Percentage of DebtSecuritiesAvailableForSaleRealizedGain0.00.00.00.00.0100.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss


Debt
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-4.0005000.0-1000.03000.07000.06000.0144000.00003162000.00
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss0.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0

us-gaap:DepreciationNonproduction

us-gaap:DepreciationNonproduction


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.4366.7997.0497.197.1097.137.1277.0326.9816.7766.466.3646.2736.3456.4076.3026.2276.1756.1756.2086.186.2116.246.3326.2265.935.9376.0546.0926.346.4336.6196.6256.4216.6186.796.927108.4917.9318.3278.6448.778.969
Percentage of DepreciationNonproduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.034340.0350.00135-0.001320.001270.00121
Percentage of DividendsCommonStockCash0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.034340.0350.00135-0.001320.001270.021
Percentage of DividendsCommonStockCash0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11000.0-77000.0-12000.069000.030000.0-77000.045000.052000.0138000.0695000.0-62000.0-247000.0-774000.0
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11000.0-77000.0-12000.069000.030000.0-77000.045000.052000.0138000.0-76000.0709000.0-247000.0-774000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense


Federal
Period End2021-06-302021-03-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.9270.8870.810.202-1.0550.8290.8590.7830.840.9280.9741.00.9841.0070.9130.391.4441.3321.5081.4931.4971.5111.441.491.571.5151.5581.4391.6761.6831.7621.6162.3632.2891.491.5671.5262.4722.5922.4572.5662.4752.6682.544
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value340000.0338000.0320000.0267000.0245000.0214000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.2711.8431.1591.7082.1883.621111.774
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-0.0070.344-0.086-0.0120.0460.4586.863
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery-0.618.7-7.4-0.72.112.659.7

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1.1571.4351.2121.5432.1482.6464.608
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery91.077.9104.690.398.273.140.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-09-302020-06-302019-09-302019-06-30
Value-0.0140.018-0.004-0.056
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery-1.21.1-0.1-0.5

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.0440.0240.0160.0560.0620.2110.047
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery3.51.31.43.32.85.80.4

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-0.016-0.021-0.0480.104-0.1030.1490.039
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery-1.3-1.1-4.16.1-4.74.10.3

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.0930.0610.079-0.0010.0350.161-0.009
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery7.33.36.8-0.11.64.4-0.1

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value577000.0510000.0728000.0634000.0792000.0672000.0552000.01061000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value7000.012000.086000.012000.09000.010000.015000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery1.22.411.81.91.11.52.7

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value498000.0458000.0523000.0599000.0671000.0585000.0408000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery86.389.871.894.584.787.173.9

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-09-302020-06-302019-09-302019-06-30
Value14000.01000.04000.056000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery1.90.20.610.1

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value11000.08000.046000.04000.08000.05000.08000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery1.91.66.30.61.00.71.4

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value37000.021000.051000.017000.0103000.065000.055000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery6.44.17.02.713.09.710.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value24000.011000.08000.01000.01000.03000.010000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery4.22.21.10.20.10.41.8

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.8482.3531.8872.3422.984.293122.835
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.00.3560.00.00.0550.4686.878
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.015.10.00.01.810.957.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1.6551.8931.7352.1422.8193.2315.016
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs89.680.591.991.594.675.341.6

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-09-302020-06-30
Value0.00.019
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.00.8

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.0550.0320.0620.060.070.2160.055
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs3.01.43.32.62.35.00.5

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302020-09-302020-06-302019-09-302019-06-30
Value0.0210.0030.1210.2140.094
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs1.10.25.25.00.8

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.1170.0720.0870.00.0360.1640.001
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs6.33.14.60.01.23.80.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-49000.034000.093000.0-203000.0358000.030000.013000.0151000.043000.01163000.0146000.0139000.08000.08000.014000.01000.015000.0224000.0186000.018000.022000.0242000.0-399000.052000.091000.0-297000.0-2000.01001000.02956000.01463000.0110000.0495000.021000.0-196000.0415000.0349000.0-30000.094000.0-65000.027000.0305000.0-170000.00-145000.0337000.0
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:GainsLossesOnSalesOfOtherRealEstate


Gains
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-738000.0219000.0374000.0-92000.079000.0224000.0607000.0170000.0469000.0148000.0629000.0686000.02000.0436000.0270000.0-7000.04000.0-44000.0-97000.095000.0-40000.0-140000.0-8000.0177000.028000.0619000.016000.065000.0233000.0259000.013000.0149000.039000.0-727000.0-156000.0163000.0232000.0689000.0-205000.072000.0182000.0
Percentage of GainsLossesOnSalesOfOtherRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value582.448-1.0670.318-0.5211.0452.579-3.1543.4443.2374.5643.384.3033.663.9482.72.895.1813.5792.3323.2232.3233.3263.2413.2860.4485.3691.9773.1092.7212.8768.5074.7021.0561.4882.2985.050.0912.5624.0294.9514.0834.453.7672.723
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.189-6.091-11.64100.451.261-2.5970.550.6032.412-1.3712.989-1.6832.1780.6971.456-2.0473.216-2.3911.797-2.0222.133-1.9031.015-1.1342.888-2.5132.777-2.3451.671-1.7282.327-2.650.548-0.8041.64-2.3521.823-3.790.919-2.610.163-3.6353.187-5.786
Percentage of IncreaseDecreaseInAccruedInterestReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks

us-gaap:IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-0.047-0.047-0.046-292.046101169-351.82297-194.7730-178.0521-363.625127181123291067452-6.1-297.8-16.775-121.132-132.48786-371.636210-75.547-65.543537364-361.534133472-56.033-296.033-63.583-198.157-16.058-254.821104378
Percentage of IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.166-9.931-10.48-0.4720.228-25.473-8.1594.904203.085.9520.3224222-5.7963.074-3.794-5.471-3.9176.169-4.2756.405-10.3442.245-1.273-3.158-3.3577.7710.365-3.9880.657-8.355-8.9265.1210.1480.010.11314-11.179-0.991-6.15855-6.8853.307-9.174
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value168.788-12.387234.5714.9079.222-5.93423-15.61718-8.27730-16.72211-9.29914-6.677-6.034-2.0947.1-20.92513-16.80817-15.78212-20.82816-9.80712-9.1584.404-9.68711-6.49111-12.9425.034-3.2336.175-36.5779.781-15.96544
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInTimeDeposits

us-gaap:IncreaseDecreaseInTimeDeposits


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.159-9.395325.952423011-21.03716-9.167-19.584-19.57-34.717-58.824-73.424-33.889-25.667-6.225-21.455-43.807-46.616-30.067-46.801-27.397-12.014-39.547-60.074-57.873-11.117-50.749-44.183-89.417-118.66-242.609-222.5748819-14.268-42.613-70.7161.34914-111.0126.263129
Percentage of IncreaseDecreaseInTimeDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InformationTechnologyAndDataProcessing

us-gaap:InformationTechnologyAndDataProcessing


Information
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value4.5264.444.9645.2574.4915.6594.6915.0034.4974.5734.4814.394.0727.0344.3024.0623.7914.3663.6873.7233.3113.3562.742.563
Percentage of InformationTechnologyAndDataProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value979799113116117124126124120118115111108106103969696979797100989998979997989186879293939599103107107111114113119
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseJuniorSubordinatedDebentures


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.7020.7080.7561.081.2731.391.4141.6811.951.871.8281.7651.5261.4251.3951.3221.251.2231.1591.1221.0961.0111.0191.0451.0241.0631.0631.0481.091.4740.8621.1651.1641.2171.431.9012.0472.2672.7712.9983.0373.0523.0723.0473.03
Percentage of InterestExpenseJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits

us-gaap:InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.990.9291.0281.1613.2353.8644.0234.2494.2433.8923.3533.2912.2281.9671.5991.3531.2891.2291.1731.1990.9610.9240.8910.9010.8770.9130.8980.9150.8710.910.8850.9561.0111.1121.0741.4791.6231.5571.7322.2322.2622.2822.212.41
Percentage of InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseOtherDomesticDeposits

us-gaap:InterestExpenseOtherDomesticDeposits


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.9081.8891.932.0882.8262.2623.1443.5133.4943.9784.358
Percentage of InterestExpenseOtherDomesticDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.1420.1410.1640.1480.4650.6120.640.5910.5890.5760.4680.3481.0231.2261.1771.1463.0684.2855.485.5525.5595.686.0416.0625.9946.1426.156.0886.2367.1297.1627.3127.5688.2658.81110101010101010111111
Percentage of InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseTimeDeposits

us-gaap:InterestExpenseTimeDeposits


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.9293.1984.2925.3195.975.8685.685.0444.3783.9243.4933.012.6692.5332.4262.4012.3762.4442.5512.3942.5742.7192.8072.8332.8742.9182.9763.0193.123.3773.6443.9784.4455.3235.916.2556.4857.0057.6368.1458.779.794111213
Percentage of InterestExpenseTimeDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value908983928699103109101103100105979590938681867977818079858183848379726865647167696874857777798282
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxExempt


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.3770.3950.6050.6530.7660.841.0191.3771.6491.8781.9812.0872.1952.2992.4092.4572.4912.5212.5612.6272.6472.8962.9012.7492.7732.7722.7442.7283.5233.4383.3183.0853.0362.9812.9722.8492.8612.8832.6942.3862.1281.9261.8971.7831.634
Percentage of InterestIncomeSecuritiesTaxExempt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:InterestIncomeSecuritiesTaxable


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.0144.8758.469151615181919192020212121201919192020202023232324262626211820232323242528293031333237
Percentage of InterestIncomeSecuritiesTaxable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value303031323635373736333534343333323232333130313129312832293028303030273030292932323230323231
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value69627073767681797271788068727173757376716766746867647068776770738068106726877808375757979105
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value973640333541423436414242383741333743403640354340364236415845444653427440435451474850464971
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncomeOther

us-gaap:NoninterestIncomeOther


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value584.0853.2350.617-0.2311.32.44-1.7033.9483.7055.6255.8414.7266.8824.9382.834.2689.1284.0822.7667.8514.8524.43.4624.2555.0155.6412.3099.0582.883.8718.6356.9971.9083.652.6475.1343.7162.7494.225.3565.5134.714.1163.357
Percentage of NoninterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:NoninterestIncomeOtherOperatingIncome


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.6343.635.5746.844.8095.6574.8134.5132.544.9423.6435.7274.0552.5162.7742.9012.8943.4183.2333.5673.4292.3994.8762.3281.8252.6851.8113.8226.2395.4022.1652.9961.782.6642.1442.5462.8034.9792.2442.6922.2943.5642.1593.7352.408
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet

us-gaap:OccupancyNet


Occupancy
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.535.6176.6775.776.8998.3847.2946.586.3779.026.8397.1636.0759.6156.4166.4175.9918.3586.1535.9066.1668.0167.1436.6816.1799.8017.8657.8567.0089.177.6047.187.8129.7358.0328.1078.73410109.0158.601109.3478.7248.518
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.479-3.012-8.901-23.03362-2.2188.815252540-15.661-11.187-39.953-21.8580.3687.02412-58.632-9.0421028-23.99417-24.8522111-10.2823420-30.0971.504-65.252-15.591-17.596-1.0157.307-7.993-10.5669.137542.978
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.0-0.0030.00.0-0.0040.0-0.002-0.005-0.0030.0-0.111-2.0550.0-1.650.603-0.599-0.874-0.148-0.086-2.6710.00.2780.0010.0-4.19-0.2465.270.00.00.06.2411.89721
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax0.0100.00.00.0100.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value01000.0001000.0001000.01000.0030000.0001107000.00889000.0-324000.0322000.0471000.079000.047000.01439000.00-149000.0002256000.0133000.0-2838000.0000-3360000.0-1022000.0-11527000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax0.0100.00.00.0100.00.00.0100.0100.00.0100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.00.00.00.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-06-302010-03-31
Value0.479-3.015-8.901-23.03362-2.2188.813252540-15.772-11.187-39.953-23.9130.3685.37413-59.278-9.9751028-26.8317-24.722111-14.6493325-30.1451.132-65.523-9.552-15.953208.086-7.352-5.65113553.736170.333
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.127-0.801-2.366-6.12316-0.5892.3436.6856.70610-4.193-2.974-9.427-12.8760.1982.8947.198-31.919-5.3715.45115-14.4489.409-13.3111129-7.888-18.16813-16.2320.609-35.282-5.143-8.591104.354-3.959-3.0437.125292.013-21.0910.0459.5670.179
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherInterestAndDividendIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value772000.0490000.0295000.0141000.0128000.0422000.0372000.0317000.0309000.0305000.0352000.0202000.0165000.0141000.0139000.0262000.083000.054000.045000.067000.039000.039000.027000.042000.036000.058000.039000.031000.063000.044000.029000.021000.021000.063000.0161000.0193000.086000.077000.041000.01676000.075000.0140000.01656000.0183000.0241000.0
Percentage of OtherInterestAndDividendIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value138.7761114131115151111171912111416138.696151616131716141416151415151515131616131817161620171716
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRealEstateCoveredValuationAdjustments

us-gaap:OtherRealEstateCoveredValuationAdjustments


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-1915000.0-150000.0-165000.00-537000.0-168000.0-66000.0-80000.0-8000.0-38000.0-375000.0-2587000.0-71000.0-380000.0-13000.0-272000.0-45000.0-235000.0-1546000.0-523000.0-47000.0-105000.0-800000.0-408000.0-133000.0-100000.0-138000.0-726000.00-548000.070000.0256000.0
Percentage of OtherRealEstateCoveredValuationAdjustments100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:OtherRevenueExpenseFromRealEstateOperations

us-gaap:OtherRevenueExpenseFromRealEstateOperations


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-3668000.0-1245000.0-1341000.0-2835000.0-3002000.0-2601000.0-1578000.0-1203000.0-995000.0-1124000.0-911000.0-2649000.0271000.024000.0407000.0-482000.0-914000.0-1113000.0-2320000.0-1377000.0-878000.0-1621000.0-1678000.0-928000.0-1468000.0-654000.055000.0-830000.0-929000.0-2172000.0-1360000.0-1575000.0-1789000.0-3298000.0-3065000.0-1385000.0-1181000.0-3599000.0-1954000.0-8150000.0-1114000.0-3646000.0-525000.0-905000.0
Percentage of OtherRevenueExpenseFromRealEstateOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-73.551-60.966864771203.5551691478942181071490.1641974682-67.709230.159281531310231226155881591448159-83.5717.728-15.697-78.532-89.697-123.645-107.5443.168-138.3414.037-7.787-81.445
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value16122017878374215130.02341450.00.0461.075237402156385
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.9513413186.7618-1.82622138.5047.4579.49417155.7421.6372.9033.391440.750.7591.7682.096110.557.6727.3284.9210.6810.8381.00.1250.5121.2721.0961.710.1510.0-0.2321.4560.7175.1991.2251.00.014
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities


Proceeds
Period End2021-06-302021-03-31
Value02870000.0
Percentage of ProceedsFromInsuranceSettlementOperatingActivities0.0100.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromIssuanceOrSaleOfEquity


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.4461.550.1190.0630.2250.4060.6430.2760.5980.3640.340.3780.440.270.0930.3480.7440.290.0910.0560.1120.1220.6030.5920.0530.150.1140.1710.120.1190.0820.0510.0130.0080.010.0230.010.0010.0020.0020.1080.00.483
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value441568644496257316248185132145166
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value9455560.00.01.0750.00.0250.1250.82.4991.324
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments100.0100.00.00.0100.00.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-8.80311-11.24612029-52.79848-37.44248-103.8142747-94.852-24.2281750-195.208-227.914-62.0410-43.51-3.24-76.1993315-11.061-0.65432-120.211-43.756-23.934-30.516-74.092-43.933-156.386-32.43613-38.188-36.7724.448-14.129-44.83-12.4171136
Percentage of ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.3552.519.8750.0181.6053219410.5190.0
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale

us-gaap:ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.00.00.00.00.00.00.00.00.00.00.00.00.01100.015011626117155381040.0230.00.02531102570.00.00.01771011205310.0175150420350751599
Percentage of ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale0.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfOtherRealEstate

us-gaap:ProceedsFromSaleOfOtherRealEstate


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value4.7761.5440.6231.5912.0347.5750.0370.2831.512.7660.5120.8890.012121.5120.0010.681130.2670.0210.0224.1041.8057.0913.8318.2743.3321.365.5593.8676.7218.1724.4113103.967115.9710.1363.9183.423
Percentage of ProceedsFromSaleOfOtherRealEstate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.2210.0340.0930.4160.37-1.8242.2150.7630.7070.91.4421.8150.376-8.9382.9328.0020.205-4.2555.9460.6561.3542.8150.8090.1470.7440.0051.633.4913.2981.880.1180.5140.0213.781.2941.9870.5140.5390.0710.0591.050.1510.1760.2391.439
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProfessionalFees

us-gaap:ProfessionalFees


Professional
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.2812.8364.1213.9133.975.584.7443.7453.5922.5914.0633.3752.5722.5073.5773.853.7163.2723.6613.4463.2931.5633.4484.023.2470.5823.4163.3153.6121.8023.6693.9523.7232.5494.2794.1713.371.7253.6983.6893.8863.5714.2913.7813.982
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1.1441.1928.7710165.2782.6657.42
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value2.0282.5474.8923.6952.8090.23-1.988
Percentage of ProvisionForLoanLossesExpensed177.3213.755.833.616.74.4-74.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-1.7290.8842.6390.1060.3270.35-0.496
Percentage of ProvisionForLoanLossesExpensed-151.174.230.11.01.96.6-18.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value2.0571.693.2772.5555.8231.8374.976
Percentage of ProvisionForLoanLossesExpensed179.8141.837.423.334.634.8186.7

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-0.803-3.206-2.8553.5215.8781.5730.428
Percentage of ProvisionForLoanLossesExpensed-70.2-269.0-32.632.034.929.816.1

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.0220.0160.1220.050.053-0.026-0.006
Percentage of ProvisionForLoanLossesExpensed1.91.31.40.50.3-0.5-0.2

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.0330.0120.0020.0210.0680.1990.073
Percentage of ProvisionForLoanLossesExpensed2.91.00.00.20.43.82.7

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-0.556-0.8550.2930.6161.2430.852-0.394
Percentage of ProvisionForLoanLossesExpensed-48.6-71.73.35.67.416.1-14.8

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.0920.1040.40.4250.6350.2630.072
Percentage of ProvisionForLoanLossesExpensed8.08.74.63.93.85.02.7

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-31
Value0.1821.7
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-31
Value3.927.85
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value20000.071000.05000.03000.011000.041000.014000.033000.017000.022000.025000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value446000.01550000.0119000.062000.0225000.0406000.0643000.0276000.0598000.0364000.0340000.0377000.0440000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value426000.01479000.0114000.059000.0214000.0383000.0602000.0262000.0565000.0343000.0323000.0355000.0415000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised95.595.495.895.295.194.393.694.994.594.295.094.294.3

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value20000.071000.05000.03000.011000.023000.041000.014000.033000.021000.017000.022000.025000.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised4.54.64.24.84.95.76.45.15.55.85.05.85.7

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodShares


Stock
Period End2021-08-022021-05-03
Value0.012
Percentage of StockRepurchasedDuringPeriodShares0.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-08-022021-05-03
Value0.0357
Percentage of StockRepurchasedDuringPeriodValue0.0100.0

us-gaap:TransferToOtherRealEstate

us-gaap:TransferToOtherRealEstate


Transfer
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0162.2921.7480.4860.634-0.9210.7040.081.050.0881.4410.0090.070.510.8221.161-3.1610.8523.8362.248
Percentage of TransferToOtherRealEstate0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.0480.14119290.028170.0740.054180.00.057
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStockCommon


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.00.0480.14119290.028170.0740.054180.00.057
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

iboc:AmountOfLoansApprovedAndClosed us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

iboc:AmountOfLoansApprovedAndClosed

iboc:PaycheckProtectionProgramLoans


Amount
Period End2021-08-012021-05-01
Value272374
Percentage of AmountOfLoansApprovedAndClosed100.0100.0

iboc:AmountOfLoansApprovedAndClosed us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:SubsequentEventType

iboc:PaycheckProtectionProgramLoans, us-gaap:SubsequentEvent


Amount
Period End2020-11-03
Value455
Percentage of AmountOfLoansApprovedAndClosed0.0

iboc:CapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital

iboc:CapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value134134134134134134134134160160160160160160160160160160161161161161161175175180180180190190190190190190190190190190190201
Percentage of CapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:ChangeInProvisionOfImpairedFinancingReceivableFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

iboc:ChangeInProvisionOfImpairedFinancingReceivableFairValueDisclosure

us-gaap:FairValueMeasurementsNonrecurring


Change
Period End2021-06-302020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value0.029-0.0860.0430.1891.1339.510.3560.7160.5748.9072.1381.6811.4940.91319191718-8.589-9.038-7.9481.503-1.5575.7434.3635.208131111100.295-0.581-0.5275.736157.2380.814-0.114
Percentage of ChangeInProvisionOfImpairedFinancingReceivableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:ChangeInProvisionOfImpairedFinancingReceivableFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:InternalCreditAssessment

us-gaap:FairValueMeasurementsNonrecurring, us-gaap:Doubtful


Change
Period End2020-09-302020-06-302020-03-31
Value0.1560.1630.093
Percentage of ChangeInProvisionOfImpairedFinancingReceivableFairValueDisclosure0.00.00.0

iboc:ChangeInProvisionOfOtherRealEstateAndForeclosedAssetsInUse us-gaap:FairValueByMeasurementFrequency

iboc:ChangeInProvisionOfOtherRealEstateAndForeclosedAssetsInUse

us-gaap:FairValueMeasurementsNonrecurring


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2065000.0150000.01539000.0702000.0537000.0537000.0322000.0154000.088000.08000.03071000.03033000.02658000.071000.0710000.0330000.0347000.045000.02351000.02116000.0570000.047000.01023000.0918000.0118000.017000.0597000.0371000.0238000.0138000.01204000.01874000.0668000.0427000.09509000.07998000.07633000.0719000.0
Percentage of ChangeInProvisionOfOtherRealEstateAndForeclosedAssetsInUse100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:EquitySecuritiesAndAvailableForSaleDebtSecurities us-gaap:FairValueByMeasurementBasis

iboc:EquitySecuritiesAndAvailableForSaleDebtSecurities

us-gaap:CarryingReportedAmountFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value417140573080329830973594337834114152
Percentage of EquitySecuritiesAndAvailableForSaleDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value417140573080329830973594337834114152
Percentage of EquitySecuritiesAndAvailableForSaleDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesAmortizedCostBasis

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesAmortizedCostBasis


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value414840343054325730453512337634814196
Percentage of EquitySecuritiesAndAvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedGains

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedGains


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value29313545568219
Percentage of EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedGains100.0100.0100.0100.0100.0100.0100.0

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedLosses

iboc:EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedLosses


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6.6939.139.3534.0833.630.19116
Percentage of EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedLosses100.0100.0100.0100.0100.0100.0100.0

iboc:FederalHomeLoanBankAdvancesLongTermFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

iboc:FederalHomeLoanBankAdvancesLongTermFairValueDisclosure

us-gaap:FairValueInputsLevel2


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value4754714804945004984654634454394364231002982496.7566.6456.6656.5898.9118.958.9937.073
Percentage of FederalHomeLoanBankAdvancesLongTermFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear


Financing
Period End2020-12-31
Value341
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear100.0

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-12-31
Value116
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear34.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-12-31
Value4.248
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear1.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-12-31
Value10
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear2.9

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-12-31
Value3.343
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear1.0

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2020-12-31
Value0.237
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear0.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2020-12-31
Value116
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear34.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2020-12-31
Value0.001
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear0.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2020-12-31
Value4.248
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear1.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-31
Value0.017
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear0.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2020-12-31
Value10.0
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear2.9

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2020-12-31
Value3.343
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear1.0

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2020-12-31
Value5.345
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear1.6

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-12-31
Value1.371
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear0.4

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2020-12-31
Value5.345
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear1.6

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2020-12-31
Value1.371
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear0.4

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:SeniorLien


Financing
Period End2020-12-31
Value0.065
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear0.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2020-12-31
Value94
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear27.7

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2020-12-31
Value105
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear30.9

iboc:FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2020-12-31
Value94
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear27.7

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2020-12-31
Value105
Percentage of FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear30.9

iboc:FinancingReceivableWatchListDoubtfulLoansRecordedInvestmentFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

iboc:FinancingReceivableWatchListDoubtfulLoansRecordedInvestmentFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring


Financing
Period End2021-06-302020-12-31
Value144000.0393000.0
Percentage of FinancingReceivableWatchListDoubtfulLoansRecordedInvestmentFairValueDisclosure100.0100.0

iboc:FinancingReceivableWatchListDoubtfulLoansRecordedInvestmentFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsNonrecurring


Financing
Period End2021-06-302020-12-31
Value144000.0393000.0
Percentage of FinancingReceivableWatchListDoubtfulLoansRecordedInvestmentFairValueDisclosure100.0100.0

iboc:FinancingReceivableWithPaymentDeferrals

iboc:FinancingReceivableWithPaymentDeferrals


Financing
Period End2021-08-012021-05-01
Value364602
Percentage of FinancingReceivableWithPaymentDeferrals100.0100.0

iboc:FinancingReceivableWithPaymentDeferrals us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Financing
Period End2020-11-03
Value1799
Percentage of FinancingReceivableWithPaymentDeferrals0.0

iboc:ImpairedCollateralDependentCommercialLoansWithInternalEvaluationCompletedWithinLastTwelveMonths

iboc:ImpairedCollateralDependentCommercialLoansWithInternalEvaluationCompletedWithinLastTwelveMonths


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value01207000.01283000.01300000.01354000.0812000.0847000.01490000.08756000.09407000.000002133000.01843000.02019000.06836000.07886000.07922000.06731000.02958000.02958000.02983000.03001000.05307000.0
Percentage of ImpairedCollateralDependentCommercialLoansWithInternalEvaluationCompletedWithinLastTwelveMonths0.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:ImpairedCommercialCollateralFinancingReceivableAppraisalsToDetermineFairValue

iboc:ImpairedCommercialCollateralFinancingReceivableAppraisalsToDetermineFairValue


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1.0820.468160.00.00.5771.4267.1842.36933101611181224252622121739353750522129435070495048
Percentage of ImpairedCommercialCollateralFinancingReceivableAppraisalsToDetermineFairValue100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure

iboc:ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure


Impaired
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1.2671.869181.8141.8961.9352.955101446142225532833333837283451474964656764656487777073
Percentage of ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InternalCreditAssessment

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring, us-gaap:Doubtful


Impaired
Period End2020-09-302020-06-302020-03-31
Value0.3930.30.254
Percentage of ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure21.715.813.1

iboc:ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:InternalCreditAssessment

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsNonrecurring, us-gaap:Doubtful


Impaired
Period End2020-09-302020-06-302020-03-31
Value0.3930.30.254
Percentage of ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure21.715.813.1

iboc:OtherRealEstateAndForeclosedAssetsInUse us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

iboc:OtherRealEstateAndForeclosedAssetsInUse

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsNonrecurring


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.981.1846.2411.5942.5812.5812127260.003388.8866.8540.0632.00.2380.5760.2519.445124.3381.722127.6331.8880.1556.112136.3525.1521611122.752187.469106.28234333152
Percentage of OtherRealEstateAndForeclosedAssetsInUse100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:OtherRealEstateAndForeclosedAssetsInUse us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsNonrecurring


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value1.981.1846.2411.5942.5812.5812127260.003388.8866.8540.0632.00.2380.5760.2519.445124.3381.722127.6336.112
Percentage of OtherRealEstateAndForeclosedAssetsInUse100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

iboc:PercentageOfAdvancesFromFederalHomeLoanBanksIncreaseDecrease

iboc:PercentageOfAdvancesFromFederalHomeLoanBanksIncreaseDecrease


Percentage
Period End2021-06-302021-03-312020-09-30
Value00-30.3
Percentage of PercentageOfAdvancesFromFederalHomeLoanBanksIncreaseDecrease0.00.0100.0

iboc:PercentageOfLoanPaymentsOnDeferralPeriod us-gaap:SubsequentEventType

iboc:PercentageOfLoanPaymentsOnDeferralPeriod

us-gaap:SubsequentEvent


Percentage
Period End2020-11-03
Value83.0
Percentage of PercentageOfLoanPaymentsOnDeferralPeriod100.0

iboc:PercentageOfLoanSortOfDeferralProgramForRelief us-gaap:SubsequentEventType

iboc:PercentageOfLoanSortOfDeferralProgramForRelief

us-gaap:SubsequentEvent


Percentage
Period End2020-11-03
Value17.0
Percentage of PercentageOfLoanSortOfDeferralProgramForRelief100.0

us-gaap:AdvancesFromFederalHomeLoanBanks

us-gaap:AdvancesFromFederalHomeLoanBanks


Advances
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value436436436436436728626456808510705674852831119510678867637336275524995058038209411073987135811481223128975238774961514219849455775577110261347
Percentage of AdvancesFromFederalHomeLoanBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:MortgageBackedSecurities


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
Value2628324253791619159.0026.8135.3969.2999.99214
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:USStatesAndPoliticalSubdivisions


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
Value3.573.5383.1312.7973.0412.7962.9333.2633.0472.9332.6462.8734.7055.5647.871
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax13.612.59.66.65.73.517.716.719.732.638.853.250.655.755.8

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:MortgageBackedSecurities


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
Value6.6849.129.3394.0693.6170.182161724497912911510265
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value0.0090.010.0140.0140.0130.0090.0050.0150.1050.2690.1450.130.016
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.10.10.10.30.44.90.00.00.10.20.10.10.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value414840343054325730453512337631873473344734813631382239554196
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


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
Value410330433006319629733441328530953348330332953444361537483943
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis98.975.498.498.197.798.097.397.196.495.894.794.994.694.894.0

us-gaap:USStatesAndPoliticalSubdivisions


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
Value4445476171719092124144185186206206225
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.11.11.61.92.32.02.72.93.64.25.35.15.45.25.4

us-gaap:USTreasurySecurities


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis23.4

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:PledgedStatus

us-gaap:CollateralPledged


Available
Period End2021-06-302021-03-312020-09-30
Value137212731116
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis33.131.634.3

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-09-30
Value444460
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue


Available
Period End2021-06-302021-03-312020-09-30
Value484863
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost


Available
Period End2021-06-302021-03-312020-09-30
Value410330433196
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue


Available
Period End2021-06-302021-03-312020-09-30
Value412330633234
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value417140573080329830973594337831923467341034113509372038684124
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleSecuritiesDebtSecurities23.3

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:MortgageBackedSecurities


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
Value412330633029323430233520328530973340326332233320350936563891
Percentage of AvailableForSaleSecuritiesDebtSecurities98.875.598.498.197.697.997.297.096.395.794.594.694.394.594.4

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


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
Value4848506474749395127147188189210212232
Percentage of AvailableForSaleSecuritiesDebtSecurities1.21.21.61.92.42.12.83.03.74.35.55.45.75.55.6

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:MortgageBackedSecurities


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
Value412330633029323430233520328530973340326332233320350936563891
Percentage of AvailableForSaleSecuritiesDebtSecurities98.875.598.498.197.697.997.297.096.395.794.594.694.394.594.4

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:USStatesAndPoliticalSubdivisions


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
Value4848506474749395127147188189210212232
Percentage of AvailableForSaleSecuritiesDebtSecurities1.21.21.61.92.42.12.83.03.74.35.55.45.75.55.6

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleSecuritiesDebtSecurities23.3

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:MortgageBackedSecurities


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
Value412330633029323430233520328530973340326332233320350936563891
Percentage of AvailableForSaleSecuritiesDebtSecurities98.875.598.498.197.697.997.297.096.395.794.594.694.394.594.4

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:USStatesAndPoliticalSubdivisions


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
Value4848506474749395127147188189210212232
Percentage of AvailableForSaleSecuritiesDebtSecurities1.21.21.61.92.42.12.83.03.74.35.55.45.75.55.6

us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:USTreasurySecurities


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleSecuritiesDebtSecurities23.3

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:MortgageBackedSecurities


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
Value412330633029323430233520328530973340326332233320350936563891
Percentage of AvailableForSaleSecuritiesDebtSecurities98.875.598.498.197.697.997.297.096.395.794.594.694.394.594.4

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:USStatesAndPoliticalSubdivisions


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
Value4848506474749395127147188189210212232
Percentage of AvailableForSaleSecuritiesDebtSecurities1.21.21.61.92.42.12.83.03.74.35.55.45.75.55.6

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:USTreasurySecurities


Available
Period End2021-03-31
Value945
Percentage of AvailableForSaleSecuritiesDebtSecurities23.3

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprises


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value320527362658279525172971271425822795268827212790293830453237
Percentage of AvailableForSaleSecuritiesDebtSecurities76.867.486.384.881.382.780.380.980.678.879.879.579.078.778.5

us-gaap:USGovernmentCorporationsAndAgenciesSecurities


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
Value917326371438506548571514544574501529571610654
Percentage of AvailableForSaleSecuritiesDebtSecurities22.08.112.113.316.315.316.916.115.716.814.715.115.415.815.9

us-gaap:CashSurrenderValueOfLifeInsurance

us-gaap:CashSurrenderValueOfLifeInsurance


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
Value293292292290293291289287286284282277
Percentage of CashSurrenderValueOfLifeInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonEquityTierOneCapitalRatio

us-gaap:CommonEquityTierOneCapitalRatio


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value19.5319.2719.0518.570.18560.18230.18580.17980.1755
Percentage of CommonEquityTierOneCapitalRatio100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value120.5360.7570.7570.361144815932080253825372211
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Debt
Period End2021-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value120.3611448159320802533253722102029
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger95.8100.0100.0100.0100.099.8100.0100.00.0

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-03-312018-12-312018-09-302017-12-31
Value0.5360.5360.7570.7574.4020.5120.5130.522
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger4.2100.0100.0100.00.20.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0320.010.0140.0140.0031416234977111
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Debt
Period End2021-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.0230.003141623497711152
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss71.9100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-03-312018-12-312018-09-302017-12-31
Value0.0090.010.0140.0140.0150.0060.0080.007
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss28.1100.0100.0100.00.00.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value16721518146211945897.906523209230.02221832
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value16721518146211945887.144523209230.022088121061
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.099.990.499.9100.0100.0100.094.297.60.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value6.6619.129.3394.0693.630.1882.2740.60.0722.22318
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302017-12-31
Value6.6619.129.3394.0693.6170.1792.2690.60.0722.1241813
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.099.695.299.8100.0100.095.598.60.0

us-gaap:DebtSecuritiesAvailableForSaleRestricted us-gaap:PledgedStatus

us-gaap:DebtSecuritiesAvailableForSaleRestricted

us-gaap:CollateralPledged


Debt
Period End2021-06-302021-03-312020-09-30
Value137212741131
Percentage of DebtSecuritiesAvailableForSaleRestricted100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value16841519146211945898.267197118032104253827583044
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value16841518146211945887.5051971180321042533274530233091
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.099.999.999.990.8100.0100.0100.099.899.599.30.0

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302017-12-31
Value0.5360.5360.7570.7570.7580.7620.7664.40213206.056
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition0.00.00.10.10.19.20.00.20.50.70.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.6939.139.3534.0833.630.1911617244979129
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:MortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value6.6849.129.3394.0693.6170.182161724497912965
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss99.999.999.999.799.695.3100.0100.0100.0100.099.999.80.0

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302017-12-31
Value0.0090.010.0140.0140.0130.0090.0050.0150.1050.2690.016
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss0.10.10.10.30.44.70.00.00.10.20.0

us-gaap:Deposits

us-gaap:Deposits


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1187611480107211030610035900988268812882888958696864586698854854486138705886486108546842486138536846684638648843884148422843682438112819383168287799181598317794677537786785575997178
Percentage of Deposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DepositsFairValueDisclosure

us-gaap:FairValueInputsLevel3


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value214121402148208820552047201119811976
Percentage of DepositsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:DividendsPayableCurrentAndNoncurrent


Dividends
Period End2020-09-302020-03-312019-09-302019-03-312018-09-302018-03-312017-09-302017-03-312016-09-302016-03-312015-09-302015-03-312014-09-302014-03-312013-09-302013-03-312012-09-302012-03-312011-09-30
Value34353532272121212019191918161513131312
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeStockOption


Employee
Period End2021-06-302021-03-312020-09-30
Value982000.01095000.01401000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0

us-gaap:FederalHomeLoanBankAdvancesLongTerm us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FederalHomeLoanBankAdvancesLongTerm

us-gaap:FairValueInputsLevel2


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value4364364364364364364364364364364364251003002506.2076.2446.2816.3168.9038.958.9936.527
Percentage of FederalHomeLoanBankAdvancesLongTerm100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10810810910294856059586761
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3432302318151616172519
Percentage of FinancingReceivableAllowanceForCreditLosses31.629.727.523.219.817.627.428.129.338.631.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.2065.9355.0514.5031.8641.7581.7862.1991.8492.3451.808
Percentage of FinancingReceivableAllowanceForCreditLosses3.95.54.64.42.02.13.03.73.23.52.9

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value23222122201911101111
Percentage of FinancingReceivableAllowanceForCreditLosses21.320.420.121.721.222.418.518.320.217.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3334373840371816151415
Percentage of FinancingReceivableAllowanceForCreditLosses31.031.734.537.343.343.930.128.126.222.124.6

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.7910.7690.7530.6380.5160.4660.8230.8190.8450.8510.871
Percentage of FinancingReceivableAllowanceForCreditLosses0.70.70.70.60.50.51.41.41.51.31.4

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.2680.2790.2910.2740.2880.3230.5420.4760.4880.4620.447
Percentage of FinancingReceivableAllowanceForCreditLosses0.20.30.30.30.30.40.90.80.80.70.7

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.1968.7369.579.3058.9648.4527.5358.0157.3127.7457.719
Percentage of FinancingReceivableAllowanceForCreditLosses7.68.18.89.19.59.912.513.412.611.612.6

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.9163.9173.8743.5293.2082.7823.7623.7293.6273.5463.467
Percentage of FinancingReceivableAllowanceForCreditLosses3.63.63.63.53.43.36.26.26.25.35.6

us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment

us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1071081081019484595956566059625867676362636260586463575252505149545249475354515056596572
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value343230231816
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment31.729.827.623.319.927.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value4.2065.9355.0514.5031.8641.786
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment3.95.54.64.42.03.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value222121211910
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment21.120.319.921.420.918.2

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value333437384018
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment31.131.834.537.443.430.1

us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.7910.7690.7530.6380.5160.823
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment0.70.70.70.60.51.4

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.2680.2790.2910.2740.2880.542
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment0.20.30.30.30.30.9

us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value8.1968.7369.579.3058.9647.535
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment7.68.18.89.29.512.6

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value3.9163.9173.8743.5293.2083.762
Percentage of FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment3.63.63.63.53.46.3

us-gaap:FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1

us-gaap:FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value0.3080.2790.2790.4810.5280.4580.3650.5111.699100.7720.70.5768.910.4340.4341.6281.5030.9611.3961.0783.7232.2061.7562.8471312211920161415154.74627
Percentage of FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.2380.2090.2090.4110.4120.249
Percentage of FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment177.374.974.985.478.068.2

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.070.070.070.070.1160.116
Percentage of FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment122.725.125.114.622.031.8

us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment

us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value738574597522758574987021688268756818665165376442640363866284616461625966591658395913589158905866571557045603558253625210512349534825474746914797480048054917498451635284
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value259724202288211019711895
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment35.232.530.427.826.327.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value365518440437188190
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment4.97.05.95.82.52.8

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value170617391784187618051290
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment23.123.323.724.724.118.8

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value161716521829194222772184
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment21.922.224.325.630.431.7

us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value141137138144132140
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment1.91.81.81.91.82.0

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value403940414246
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment0.50.50.50.50.60.7

us-gaap:FinancingReceivableCollectivelyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value516549593623659705
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment7.07.47.98.28.810.3

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value399401404409421427
Percentage of FinancingReceivableCollectivelyEvaluatedForImpairment5.45.45.45.45.66.2

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.9752.681193.2773.4783.3491219235623323566633843434847374360565873767774767599867983857812913613792125
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.4040.4220.4390.5010.5361.208
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment20.515.72.315.315.49.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.1210.1270.1340.1370.1370.165
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment6.14.70.74.23.91.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.5671.0551.1891.4441.5951.935
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment28.739.46.144.145.915.3

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.7690.892170.9110.9140.938
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment38.933.390.027.826.37.4

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2020-09-302020-06-302019-12-31
Value0.0030.0031.195
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment0.10.19.4

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.0350.0380.0380.0380.0410.692
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment1.81.40.21.21.25.5

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.0790.1470.1510.2430.2526.278
Percentage of FinancingReceivableIndividuallyEvaluatedForImpairment4.05.50.87.47.249.5

us-gaap:FinancingReceivableModificationsRecordedInvestment

us-gaap:FinancingReceivableModificationsRecordedInvestment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value3.3228.9135.8215.8355.766.017.7887.8397.9898.0748.158141416151821212224151615151515151721192020221924
Percentage of FinancingReceivableModificationsRecordedInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsRecordedInvestment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.0180.6370.2330.2410.2490.264
Percentage of FinancingReceivableModificationsRecordedInvestment0.57.14.04.14.33.4

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.8050.9380.9890.8881.0071.192
Percentage of FinancingReceivableModificationsRecordedInvestment24.210.517.015.217.515.3

us-gaap:FinancingReceivableModificationsRecordedInvestment us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.2650.4690.5210.5570.670.692
Percentage of FinancingReceivableModificationsRecordedInvestment8.05.39.09.511.68.9

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value2.2346.8694.0784.1493.8345.608
Percentage of FinancingReceivableModificationsRecordedInvestment67.277.170.171.166.672.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value508586341409478566
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value260300116146174
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear51.251.334.335.836.4

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8.6979.7514.2481112
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.71.71.22.82.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1519101112
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear3.03.32.92.82.6

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8.702113.3437.60213
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.72.01.01.92.8

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-09-30
Value0.001
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2020-12-312020-09-302020-06-30
Value0.2370.2420.254
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.10.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value258296116143169
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear50.950.634.234.935.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-06-30
Value0.9123.2033.2180.42
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.20.50.90.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.4660.4710.0013.4973.496
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.10.10.00.90.7

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8.6979.7514.2481112
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.71.71.22.82.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0120.0140.0170.0220.025
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-03-31
Value0.306
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value151810.01112
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear3.03.22.92.82.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-30
Value0.001
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2020-12-31
Value0.315
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8.702113.3437.60213
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.72.01.01.92.8

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5.6067.0595.3455.8757.077
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.11.21.61.41.5

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.5891.5271.3711.3141.448
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.30.30.40.30.3

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5.6067.0595.3455.8757.077
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear1.11.21.61.41.5

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.5891.5271.3711.3111.445
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.30.30.40.30.3

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass, us-gaap:SeniorLien


Financing
Period End2020-09-30
Value0.001
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:SeniorLien


Financing
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.0650.0650.0660.072
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear0.00.00.00.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value10612594111133
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear20.921.527.727.128.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value102110105114123
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear20.118.830.927.825.8

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value10612594111133
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear20.921.527.727.128.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value102110105114123
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear20.118.830.927.925.8

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value458495327361385446
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value205178206211212
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear44.936.163.058.555.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value69636.8018.3929.704
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear15.112.92.12.32.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7377142021
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear16.015.74.35.65.5

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1567101314
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.513.63.23.93.9

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0970.0960.087.4487.448
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.00.02.11.9

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value203176202200201
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear44.435.661.955.452.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0640.1613.2183.2283.207
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.01.00.90.8

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value2.222.2450.4750.4780.637
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.50.50.10.10.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value69636.8018.3929.704
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear15.112.92.12.32.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302021-03-312020-12-312020-06-30
Value0.1030.1030.1590.018
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7377131920
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear16.015.64.25.55.4

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2020-12-312020-09-302020-06-30
Value0.3150.3230.378
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.10.10.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1567101314
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear3.513.63.23.93.9

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5.5245.813.5333.7114.155
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.21.21.11.01.1

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0850.1560.0550.0950.152
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.00.00.00.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5.5245.813.5333.7114.155
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear1.21.21.11.01.1

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0850.1560.0550.0950.152
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.00.00.00.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:SeniorLien


Financing
Period End2020-09-302020-06-30
Value0.0880.091
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5363566782
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear11.712.817.318.721.5

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3437293539
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear7.67.68.99.910.1

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard, us-gaap:SeniorLien


Financing
Period End2020-12-312020-09-302020-06-30
Value0.0490.050.05
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear0.00.00.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5364566782
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear11.712.917.318.721.5

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3437293639
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear7.67.69.010.010.2

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1762836360127802090717
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value4832411002591400
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear27.428.827.821.319.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value2517744925
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.52.12.11.81.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value65331112881167982
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear37.137.335.842.047.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value397170833647460
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear22.620.423.223.322.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1717612522
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.02.11.70.91.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value464221884561373
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear26.326.524.520.217.8

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value2.1542.073.0411.3680.938
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.20.10.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2020-12-312020-09-302020-06-30
Value533.3153.371
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.50.10.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2020-12-312020-09-302020-06-30
Value0.1340.1370.137
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value2517744924
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.52.12.11.81.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-312020-09-302020-06-30
Value391.2270.53
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.10.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302020-12-312020-09-302020-06-30
Value0.320.7770.7990.813
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value64830711681092909
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear36.836.832.439.343.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.5281.179757271
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.10.12.12.63.4

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-31
Value3.1233.0273.36
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.20.40.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-312020-09-302020-06-30
Value232.34416
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.60.10.8

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2020-12-312020-09-302020-06-30
Value160.1180.12
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.50.00.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value367140773613426
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear20.816.821.522.120.4

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3030201216
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.73.60.60.50.8

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2020-09-302020-06-30
Value180.376
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.70.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value4817938250
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear2.82.12.63.02.4

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value188.044302519
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.11.00.90.90.9

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value4817938250
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear2.82.12.63.02.4

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value188.044302519
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear1.11.00.90.90.9

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:SeniorLien


Financing
Period End2020-12-312020-09-302020-06-30
Value0.0860.0890.089
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.00.00.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6728196158111
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.83.45.55.75.3

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6741815841
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.85.02.22.12.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention, us-gaap:JuniorLien


Financing
Period End2020-12-31
Value0.74
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard, us-gaap:SeniorLien


Financing
Period End2021-06-30
Value0.058
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear0.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6728197158111
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.83.45.55.75.3

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6741815841
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear3.85.02.32.12.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value248130101627207823472893
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value853876380589622
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear34.429.123.428.326.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value819620822059
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear3.33.212.810.62.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value697974241342407
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear28.132.414.916.517.4

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value539697600691980
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear21.723.236.933.341.8

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value44440.9428.8857.933
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.81.50.10.40.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.2190.2280.2020.2210.243
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value752776373524558
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear30.325.823.025.223.8

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-31
Value1.3351.3573.041
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.10.00.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value54544.9865555
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.21.80.32.72.4

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302021-03-312020-12-31
Value0.1210.1270.134
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value819620822059
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear3.33.212.810.62.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value36370.0113433
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.51.20.01.71.4

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.1440.4770.1610.3140.33
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value585862240307373
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear23.628.614.814.815.9

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7474750.3930.569
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear3.02.54.60.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-06-30
Value0.2870.310.6830.003
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.00.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value23231.4512527
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.90.80.11.21.2

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.7690.8920.7940.7930.793
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.00.00.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value515673576665951
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear20.822.435.432.040.5

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2020-12-31
Value21
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear1.3

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6084193249
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.42.81.21.62.1

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value16247.1591218
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.70.80.40.60.8

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6084193249
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.42.81.21.62.1

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value16247.1591218
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.70.80.40.60.8

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:JuniorLien


Financing
Period End2021-06-30
Value0.035
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-31
Value0.0790.0820.086
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value165181108123139
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear6.76.06.75.95.9

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6873626571
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.82.53.83.23.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention, us-gaap:JuniorLien


Financing
Period End2021-03-312020-12-312020-09-30
Value0.740.740.83
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear0.00.00.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value165182108123139
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear6.76.16.76.05.9

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value6874626571
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear2.82.53.83.23.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value886999556699764857
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value450462192213195
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear50.746.334.530.525.7

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value77115646464
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear8.711.511.59.28.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value11514085133140
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear13.014.115.419.118.4

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value13415778132186
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear15.215.814.019.024.5

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.2770.2770.088.8798.878
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.00.01.31.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2020-09-302020-06-30
Value0.0380.039
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value445457189201184
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear50.245.834.128.824.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value4.174.5980.1770.1790.175
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.50.50.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2020-12-312020-09-302020-06-30
Value2.2692.2932.312
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.40.30.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value77115646464
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear8.711.511.59.28.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-31
Value0.003
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.1640.1590.1680.221
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value11514085133140
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear13.014.115.319.118.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-31
Value0.0610.1080.289
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.00.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2021-06-302021-03-31
Value0.0510.049
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value13415778132186
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear15.215.714.019.024.5

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value10106.1926.7866.972
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.11.11.11.00.9

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.4280.5980.2250.2660.404
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.10.00.00.1

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value10106.1926.7866.972
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear1.11.11.11.00.9

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.4280.5980.2250.2660.404
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.00.10.00.00.1

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass, us-gaap:SeniorLien


Financing
Period End2020-12-31
Value0.131
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value42517588106
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.85.113.512.713.9

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5661545861
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear6.46.19.88.48.1

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention, us-gaap:JuniorLien


Financing
Period End2020-12-312020-09-302020-06-30
Value0.8120.8110.81
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear0.10.10.1

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value42517589106
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear4.85.113.612.814.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value5661545861
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear6.46.19.88.48.1

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value129015331087125814351543
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0100.0

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value345361391358366
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear26.823.636.028.525.5

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value102216828317
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear8.014.17.66.61.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value152216146202242
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear11.814.113.416.116.9

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value522548320450622
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear40.535.829.535.843.4

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

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-312020-09-302020-06-30
Value0.2772022
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.01.61.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-06-302021-03-312020-12-31
Value0.1850.1940.202
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value340355386333339
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear26.423.235.526.523.6

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.9210.9314.7584.7924.702
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.10.40.40.3

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value4.4974.7454.9860.1680.192
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.30.30.50.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateMultifamilyReceivable, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value102216828317
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear8.014.17.66.61.2

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-312020-09-302020-06-30
Value0.0112929
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.02.42.1

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.0050.0920.1630.214
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.00.00.0

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value151215145171212
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear11.814.013.413.614.8

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.8450.920.2890.6530.708
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.10.00.10.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass


Financing
Period End2020-12-312020-06-30
Value1.4510.16
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.10.0

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful


Financing
Period End2020-12-31
Value0.794
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.1

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value522548320450622
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear40.535.829.535.843.4

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic, us-gaap:SpecialMention


Financing
Period End2020-12-31
Value21
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear2.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1112111214
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.90.81.11.01.0

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3.1724.6830.8751.362.387
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.20.30.10.10.2

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1112111214
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.90.81.11.01.0

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value3.1724.6830.8751.362.387
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.20.30.10.10.2

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, iboc:SpecialPass, us-gaap:SeniorLien


Financing
Period End2020-12-312020-09-302020-06-30
Value0.1310.1310.129
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.00.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Doubtful, us-gaap:JuniorLien


Financing
Period End2020-12-312020-09-302020-06-30
Value0.0380.0380.041
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.00.0

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8196617285
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear6.36.35.75.75.9

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Pass, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7076727783
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear5.55.06.76.15.8

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:Substandard, us-gaap:SeniorLien


Financing
Period End2020-09-302020-06-30
Value0.0620.067
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear0.00.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LienCategory

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:JuniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value8196617285
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear6.36.35.75.75.9

us-gaap:ResidentialPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:SeniorLien


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7076727783
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear5.55.06.76.15.8

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value129.1058.2388.2595653597.6267.0528.292407.4498.8858.1877.2577.286.6638.9815.2268.3927.0288.55811138.2817.0089.98816136.3347.197112725153613151414211912
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, iboc:CommercialRealEstateFarmlandAndCommercialReceivable, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-06-302019-12-31
Value0.0040.0720.1864954
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing0.00.82.388.291.9

iboc:CommercialFinancialAndAgriculturalRealEstatePortfolioSegment, us-gaap:CommercialLoan, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value1.6460.4920.3180.9711.3390.421
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing12.85.43.911.82.40.7

us-gaap:CommercialRealEstatePortfolioSegment, us-gaap:ConstructionLoans, us-gaap:GeographicDistributionDomestic


Financing
Period End2021-06-302021-03-312020-09-302020-06-30
Value3.5570.0010.1420.118
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing27.60.01.70.2

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

iboc:ForeignPortfolioSegment, us-gaap:GeographicDistributionForeign


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.4660.5330.5680.2050.2770.011
Percentage of FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing3.65.96.92.50.50.0

us-gaap:ConsumerPortfolioSegment, us-gaap:GeographicDistributionDomestic