BL


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:DebtConversionByUniqueDescription, us-gaap:DebtInstrument
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:DebtInstrument

us-gaap:EarningsPerShareBasic
us-gaap:Restatement

us-gaap:EarningsPerShareDiluted
us-gaap:Restatement
us-gaap:StatementScenario, us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount
us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService

us-gaap:CostOfRevenue

us-gaap:CostsAndExpenses

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense

us-gaap:NetIncomeLoss
us-gaap:Restatement
us-gaap:StatementEquityComponents
us-gaap:StatementScenario, us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss

us-gaap:ResearchAndDevelopmentExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:StatementGeographical

us-gaap:Revenues

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:BusinessAcquisition

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:TaxesPayableCurrent
us-gaap:DebtInstrument
us-gaap:LongTermDebt

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

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:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:Restatement
us-gaap:StatementEquityComponents
us-gaap:StatementScenario, us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:AwardType, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

bl:AdjustmentToAdditionalPaidInCapitalPurchaseOfCappedCalls
us-gaap:StatementEquityComponents

bl:CapitalizedSoftwareDevelopmentCostsIncludedInAccountsPayableAndAccruedExpensesAndOtherLiabilitiesCurrent

bl:CappedCallsCost

bl:CouponInterestExpense
us-gaap:DebtInstrument
us-gaap:DebtInstrument
bl:DebtIssuanceCosts
us-gaap:DebtInstrument
bl:DebtRepurchaseAmountPercentagePriorToMaturity

bl:NetIncomeLossAdjustmentAttributableToRedeemableNonControllingInterest

bl:NetIncomeLossAttributableToRedeemableNoncontrollingInterestExcludingAdjustments

bl:NetIncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest

bl:NonCashLeaseExpense

bl:OperatingLeasePaymentsExcludingInterest
us-gaap:BusinessAcquisition
bl:PaymentsToAcquireBusinessesNetOfWorkingCapitalAdjustments
us-gaap:BusinessAcquisition
bl:PaymentsToAcquireBusinessesWorkingCapitalAdjustments

bl:PaymentsToAcquireCappedCallsRelatedToConvertibleSeniorNotes

bl:PaymentsToFinancePropertyPlantAndEquipment

bl:RedeemableNoncontrollingInterestEquityCarryingAmountAdjustmentOverUnderStatement
us-gaap:Restatement

bl:StockBasedCompensationCapitalizedForSoftwareDevelopment
us-gaap:StatementEquityComponents
bl:StockIssuedDuringPeriodSharesStockOptionsExercisedNetOfSharesWithholdings

bl:StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding
us-gaap:StatementEquityComponents
us-gaap:DebtInstrument
bl:TransactionCostsAllocatedToLiabilityComponent
us-gaap:DebtInstrument
bl:TransactionCostsAttributableToEquityComponent

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfFinancingCostsAndDiscounts
us-gaap:DebtInstrument
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:Range, us-gaap:DebtConversionByUniqueDescription, us-gaap:DebtInstrument
us-gaap:DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger

us-gaap:DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction

us-gaap:DeferredFederalStateAndLocalTaxExpenseBenefit

us-gaap:DepreciationAndAmortization

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
us-gaap:FairValueByLiabilityClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
us-gaap:BusinessAcquisition
us-gaap:FinitelivedIntangibleAssetsAcquired1
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:InterestIncomeOther

us-gaap:MarketableSecuritiesRealizedGainLoss

us-gaap:MinorityInterestChangeInRedemptionValue

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest
us-gaap:IncomeStatementLocation
us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToDevelopSoftware

us-gaap:ProceedsFromConvertibleDebt
us-gaap:DebtInstrument

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockPlans

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:RepaymentsOfConvertibleDebt

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents

us-gaap:TemporaryEquityForeignCurrencyTranslationAdjustments

bl:AccruedExpensesAndOtherLiabilitiesCurrent
us-gaap:BusinessAcquisition
bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities
us-gaap:BusinessAcquisition
bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiability
us-gaap:BusinessAcquisition
bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets
us-gaap:DebtInstrument
bl:DebtInstrumentFaceAmountOptional

bl:DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo

bl:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo

bl:DeferredTaxAssetsOperatingLeases

bl:DeferredTaxLiabilitiesRightOfUseAsset

bl:MarketableSecuritiesContinuousLossPositionForLessThan12MonthsEstimatedFairValue
us-gaap:IncomeTaxAuthority
bl:NetOperatingLossCarryforwardsRecapturedDueToChangeInTaxStatusUtilized

bl:PrepaymentToAcquireBusiness

bl:PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets
us-gaap:StatementGeographical

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

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

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument
us-gaap:InvestmentType

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

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
us-gaap:FinancialInstrument
us-gaap:InvestmentType
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization

us-gaap:CapitalizedComputerSoftwareNet

us-gaap:CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:AwardType, us-gaap:PlanName
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance
us-gaap:SubsidiarySaleOfStock

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ConvertibleDebtFairValueDisclosures
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:ConvertibleDebtNoncurrent
us-gaap:DebtInstrument
us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts

us-gaap:DeferredTaxLiabilitiesFinancingArrangements

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DueFromRelatedPartiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:SubsidiarySaleOfStock
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
us-gaap:FairValueByLiabilityClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherPrepaidExpenseCurrent

us-gaap:PurchaseObligation

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:IncomeStatementLocation
us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested
us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accounts Payable Current
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:CommonStockValue ████▇▇▇▇▇▇▆▆▆▆▆▆▆▅▅▁0.5840.580.5770.5730.5690.5640.5590.5560.5530.550.5470.5470.5390.5350.530.5280.5250.5130.5130.413NANA0.407NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock████▇▇▇▇▇▇▆▆▆▆▆▆▆▅▅▁58.40258.03857.68257.25556.85556.37955.93155.63155.30755.03154.68354.64353.83753.44252.98352.84352.46951.28511451.27796441.316829NANA40.673327NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁58.21457.86NA57.06356.61456.174NA55.4855.17154.835NA54.26353.55553.151NA52.59251.84251.282NANANANANANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁58.21457.86NA57.06356.61456.174NA55.4855.17154.835NA54.26353.55553.151NA52.59251.84251.282NANANANANANANANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NA5.128NANANA5.378NANANA5.618NANANA6.66NANANA7.053073NANANA6.474835NANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOptionNA3.021NANANA3.237NANANA3.705NANANA5.017NANANA5.87NANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSUNA2.107NANANA1.458NANANA1.23NANANA0.96NANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities,us-gaap:DebtConversionByUniqueDescription,us-gaap:DebtInstrument bl:ConvertibleNotes,bl:CertainCorporateEventsOccurPriorToMaturityDateOrCompanyIssuesNoticeOfRedemption,bl:ConvertibleSeniorNotesDue2026NA9.9NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities,us-gaap:DebtConversionByUniqueDescription,us-gaap:DebtInstrument bl:ConvertibleNotes,bl:CertainCorporateEventsOccurPriorToMaturityDateOrCompanyIssuesNoticeOfRedemption,bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFourNA4.7NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities,us-gaap:DebtInstrument bl:ConvertibleNotes,bl:ConvertibleSeniorNotesDue2026NA1.3NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities,us-gaap:DebtInstrument bl:ConvertibleNotes,bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFourNA6.2NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▄▁▅▇▇▆▇▇█▇▇█▇▇█▆▇▇▅▇▇▆-0.44-0.67-0.3-0.15-0.15-0.23-0.16-0.17-0.09-0.16-0.14-0.08-0.16-0.13-0.11-0.25-0.2-0.18-0.33-0.16-0.19-0.23NANANANA
 us-gaap:EarningsPerShareBasic us-gaap:Restatement srt:RevisionOfPriorPeriodErrorCorrectionAdjustmentNANANA-0.03-0.010.020.010.01NANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareDiluted ▄▁▅▇▇▆▇▇█▇▇█▇▇█▆▇▇▅▇▇▆-0.44-0.67-0.3-0.15-0.15-0.23-0.16-0.17-0.09-0.16-0.14-0.08-0.16-0.13-0.11-0.25-0.2-0.18-0.33-0.16-0.19-0.23NANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:Restatement srt:RevisionOfPriorPeriodErrorCorrectionAdjustmentNANANA-0.03-0.010.020.010.01NANANANANANANANANANANANANANANANANANA
 us-gaap:EarningsPerShareBasicAndDiluted us-gaap:StatementScenario,us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount us-gaap:ScenarioAdjustment,bl:RedeemableNonControllingInterestAdjustmentNANANA-0.03NANANA-0.01NANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
 COGS Ratio us-gaap:ProductOrService us-gaap:SubscriptionAndCirculation██▇▇▆▆▅▅▄▄▃▃▃▂▂▁▁95.1791.65589.78283.87577.86777.03574.79670.31166.06661.27459.56456.1753.04748.62547.65943.03239.832NANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:TechnologyService██▆▇▆▆▆▄▃▂▂▂▁▂▁▁▁6.9527.2015.9286.2825.4055.5635.4624.6143.5982.8552.7522.5642.4072.6592.3582.3922.149NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:AllocatedShareBasedCompensationExpense █▇▇▆▆▅▅▅▄▃▃▃▃▂▂▄▁▁▁▁▁▁▁▁17.06514.79414.29213.32612.6169.4569.44710.1418.0126.4526.1885.345.3933.9743.0939.1151.9871.8491.9921.361.5491.6251.6271.56NANA
us-gaap:ComprehensiveIncomeNetOfTax ▃▁▆▇▇▆▇▇█▇▇█▇▇█▆▇▇▅▇▇▇-25.343-33.108-12.558-7.807-6.736-10.953-8.583-8.421-4.917-8.449-7.595-4.435-8.441-7.225-5.876-13.051-10.148-9.008-15.705-6.619-7.541-9.335NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▅▆▃▅▄▁▁█▆-0.281-0.302-0.223-0.381-0.307-0.328-0.488-0.504-0.111-0.212NANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▃▁▆▇▇▆▇▇█▇▇█▇▇-25.624-33.41-12.781-8.188-7.043-11.281-9.071-8.925-5.028-8.661-7.525-4.435-8.441-7.225NANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold █▇▆▅▅▅▅▅▅▄▄▄▃▃▃▃▃▂▂▂▁▁▁▁23.57221.8919.18216.98216.74316.06515.12115.29214.94413.61813.88513.51711.86611.60610.94710.87110.3579.2328.6677.5417.0636.946.3475.943NANA
us-gaap:CostOfRevenue █▇▆▅▅▅▅▅▅▄▄▄▃▃▃▃▃▂▂▂▁▁▁▁23.57221.8919.18216.98216.74316.06515.12115.29214.94413.61813.88513.51711.86611.60610.98110.89810.3759.2328.6677.5417.0636.946.3475.943NANA
us-gaap:CostsAndExpenses ▇█▇▆▅▆▅▅▅▄▄▃▄▃▃▃▂▂▂▂▁▁▁▁88.22295.67183.7275.21169.85573.8769.87467.49460.69859.83456.85550.23852.41947.23844.9648.17839.7737.69735.38231.82230.22229.4228.0925.56NANA
us-gaap:GainsLossesOnExtinguishmentOfDebt █▁0.0-7.012NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense ▅█▆▅▄▅▄▄▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁20.24528.26920.29717.79416.18217.33815.61314.08812.67713.67912.3811.26812.45811.08211.1478.928.6368.2538.2787.6985.9565.9795.965.916NANA
us-gaap:GrossProfit ███▇▇▇▇▆▅▅▅▄▄▄▄▃▃▃▂▂▂▂▂▁▁▁78.5576.96676.52873.17566.52966.53365.13759.63354.7250.51148.43145.21743.58839.67839.25234.97331.91829.40226.67324.65521.96319.62118.12715.71813.93913.094
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▃▁▆▇▇▇▇▇█▇▇█▇▇█▆▇▇▅▇▇▆▆▇-25.253-33.415-12.803-7.302-7.982-10.613-7.843-8.706-5.244-8.628-7.762-4.443-8.324-7.175-5.388-12.93-10.101-9.075-17.687-8.461-8.938-10.66-10.962-10.584NANA
us-gaap:IncomeTaxExpenseBenefit ▇▆▆▇▆▇█▇▇▇▆▆▇▆▇▇▆▆▄▄▄▅▁▁0.323-0.191-0.1690.555-0.0410.3571.1680.2060.1460.2050.0320.0170.133-0.020.4570.1620.013-0.065-2.023-1.842-1.397-1.325-3.755-3.849NANA
us-gaap:InterestExpense ██▃▃▃▂▂▁15.66814.8045.9715.9145.7415.6855.6443.006NANA0.00.00.00.0040.00.0060.0030.0042.7981.2940.9790.8650.7490.822NANA
us-gaap:NetIncomeLoss ▄▁▅▇▇▆▇▇█▇▇█▇▇█▆▇▇▆█▇▇▇▇██-25.446-38.964-16.985-8.751-8.332-12.843-9.186-9.242-5.225-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664-6.619-7.541-9.335-7.207-6.735-6.538-4.254
 us-gaap:NetIncomeLoss us-gaap:Restatement srt:RevisionOfPriorPeriodErrorCorrectionAdjustmentNANANA-1.5-0.61.20.50.4NANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▁▃▆▇▅▇▇█-0.154-5.937-4.619-1.319-0.719-2.201-0.94-0.839-0.054NANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▃▁▆▇▇▆▇▇█▇▇█▇▇█▆▇▇▅-25.292-33.027-12.366-7.432-7.613-10.642-8.246-8.367-5.308-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664NANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementScenario,us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount us-gaap:ScenarioAdjustment,bl:RedeemableNonControllingInterestAdjustmentNANANA-1.5NANANA-0.4NANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▅▆▆▅▅▅▁█▆▆-0.284-0.197-0.268-0.425-0.328-0.328-1.3590.33-0.165-0.25NANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▅▁▆█▇▆▇▆▆▅▅▇▅▆▆▃▆▅▅▆▅▅▅▅-9.672-18.705-7.192-2.036-3.326-7.337-4.737-7.861-5.978-9.323-8.424-5.021-8.831-7.56-5.708-13.205-7.852-8.295-8.709-7.167-8.259-9.799-9.963-9.842NANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▁██▇0.006-0.210.090.0880.042NA-0.0470.010.22NANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▃▂▂▁█▁▃▃▅▄▄▃▃▂▃▃▃▃-0.048-0.186-0.147-0.3310.898-0.311-0.06-0.0130.3620.1720.2690.0250.016-0.07-0.0310.041-0.0340.002NANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▁▁▅▅▆▆▆▇████████▇▇▄▇▇▇▇▇-15.581-14.71-5.611-5.266-4.656-3.276-3.106-0.8450.7340.6950.6620.5780.5070.3850.320.275-2.249-0.78-8.978-1.294-0.679-0.861-0.999-0.742NANA
us-gaap:ProfitLoss ▃▁▆▇▇▆▇▇█▇▇█▇▇█▆▇▇-25.576-33.224-12.634-7.857-7.941-10.97-8.712-8.912-5.39-8.833-7.794-4.46-8.457-7.155-4.166-12.074-9.126-7.685NANANANANANANANA
us-gaap:ResearchAndDevelopmentExpense ███▆▄▄▄▄▄▄▃▂▂▂▂▁▂▂▁▁▁▁▁▁18.79518.97318.04114.82911.84711.74710.31211.55810.82910.3078.7537.2617.8116.9296.0345.8836.0095.9485.5735.0875.1935.2725.2784.904NANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▇▇▆▆▆▆▅▅▅▄▄▄▄▃▃▃▂▂▂▂▂▁▁▁102.12298.85695.7190.15783.27282.59880.25874.92569.66464.12962.31658.73455.45451.28450.01745.42441.98138.18135.3432.19629.02626.56124.47421.66119.42518.047
us-gaap:Revenues ██▇▇▆▆▆▆▅▅▅▄▄▄▄▃▃▃▂▂▂▂▂▁▁▁102.12298.85695.7190.15783.27282.59880.25874.92569.66464.12962.31658.73455.45451.28450.23345.87142.29338.63435.3432.19629.02626.56124.47421.66119.42518.047
us-gaap:SellingAndMarketingExpense ██▇▇▇▇▇▇▆▅▅▄▅▄▄▅▃▃▂▂▂▂▁▁49.18248.42945.38242.58841.82644.78543.94941.84837.19235.84835.72231.70932.1529.22727.77933.37525.12523.49621.53119.03719.07318.16916.85214.74NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:Assets ██▅▅▅▄▄▄▂▂▂▂▂▂▂▁▁▁▁▁1732.0671708.7971113.5051046.7651033.251011.3741014.552975.639523.502504.953493.868474.694464.44458.515440.884422.123417.992416.235420.437331.235NANA286.75NANANA
us-gaap:Liabilities ██▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁1376.9941351.01678.911621.703616.282608.407611.034574.765192.199180.242167.912152.261150.352140.954146.256126.334121.211131.889129.027178.687NANA120.582NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▅▅▅▄▄▄▂▂▂▂▂▂▂▁▁▁▁▁1732.0671708.7971113.5051046.7651033.251011.3741014.552975.639523.502504.953493.868474.694464.44458.515440.884422.123417.992416.235420.437331.235NANA286.75NANANA
us-gaap:StockholdersEquity ▆▆███▇▇▇▆▅▅▅▅▅▅▅▅▄▅▁337.041339.628422.07416.934409.778396.189398.613396.421327.185320.536321.569322.433314.088317.561294.628295.789296.781284.346291.41152.548NANA166.168NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:AssetsCurrent ██▄▅▅▅▅▅▂▂▂▂▂▂▂▂▂▂▂▁1287.3581267.491674.115753.997739.913720.596723.406689.26235.782219.339221.521204.493192.533186.676193.954172.743167.548162.515163.82368.032NANA48.487NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▆█▄▄▅▃▂▅▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁643.343848.268367.413408.07471.62310.989120.232528.19763.25549.67646.18138.40128.68230.86431.10424.64523.50723.44822.11819.58613.64713.46415.20518.015NANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▆█▄▄▅▃▂▅▁▁▁▁▁▁▁▁▁▁▁643.816848.737367.913408.35471.888311.252120.502528.45963.52749.94546.45538.67929.14231.33831.50425.04523.90723.84822.518NANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▇▆█▆▇▆▇▅▅▄▅▄▃▃▃▂▂▂▂▁100.90989.423111.2791.13798.12490.057102.82981.86579.13572.34374.90263.39861.05757.01961.58945.23343.52543.88942.29436.761NANA24.235NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▂▂▂█▂▂▁▁▁▁▂▂▂▂▁▁▁▁▁▁18.25520.80920.226137.35715.29316.57212.8310.87411.45312.24114.04215.97916.60315.6256.146.7946.9277.7776.6144.456NANA2.801NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA37.029NANANA31.56NANANA26.602NANANA21.312NANANA16.252NANANA15.47NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA13.48NANANA10.547NANANA6.598NANANA4.919NANANA3.287NANANA2.173NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA0.017NANANA0.528NANANANANANANA0.18NANANA0.523NANANA1.274NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNANA2.806NANANA2.606NANANA2.571NANANA2.204NANANA1.725NANANA1.852NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA10.165NANANA10.134NANANA10.077NANANA9.075NANANA6.888NANANA7.67NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA10.561NANANA7.745NANANA7.356NANANA4.934NANANA3.829NANANA2.501NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA23.79NANANA18.536NANANA13.066NANANA8.543NANANA4.934NANANA3.051NANANA
us-gaap:PropertyPlantAndEquipmentNet ▃▅▇▁▄▇▆▆██▇▇█▇▆▄▁▂▂▃11.51712.51213.23910.78712.1613.15513.02412.89113.76213.78513.53613.15513.75413.2812.76912.12610.95911.27411.31811.857NANA12.419NANANA
us-gaap:Goodwill ███▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁289.71289.71289.71185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.138185.052NANA163.154NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▅▆▆▁▁▁▁▂▂▃▃▄▄▅▅▆▆▇▇█40.87443.78146.67415.06616.68815.97717.5219.06321.62924.70827.78530.86834.17337.48540.80844.1347.45550.78854.11857.434NANA56.828NANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA46.674NANANA17.52NANANA27.785NANANA40.808NANANA54.118NANANA56.828NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA16.425NANANA8.379NANANA12.25NANANA16.142NANANA20.042NANANA19.758NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:DevelopedTechnologyRightsNANA23.895NANANA3.288NANANA8.086NANANA14.981NANANA21.864NANANA22.518NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:PatentedTechnologyNANA2.097NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNamesNANA4.257NANANA5.853NANANA7.449NANANA9.047NANANA10.616NANANA12.237NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▂▃▄▅▇███7.9118.6348.7089.27410.30811.44912.54913.38113.45913.655NANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇▇▆▆▆▆▅▅▅▄▄▄▄▁▁▁▁▁▁74.69568.81165.36958.57856.28954.04452.88346.48244.4839.35936.86532.11530.53428.3791.3911.8571.5171.4711.4494.747NANA2.895NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:AccountsPayableCurrent ▃▂▂▁▄█▅▁▂▃▂▂▂▅▅▂▃▃▅▆3.8693.3653.152.0886.17211.3577.4011.6142.9634.1733.4422.9022.4966.5667.2542.9345.0554.2697.1658.456NANA4.648NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▇▇▅▅▄▅▃▃▂▂▁▁206.564193.429191.137165.699167.403161.289162.552144.1144.3133.024129.074118.26117.42NA104.184NANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ██▇▆▆▅▆▄▄▄▄▃▃▂▃▂▂▂▁▁259.769248.238242.33203.63202.995199.587206.997178.205174.748162.631159.229143.344141.172131.547137.039117.454111.957110.343108.46497.723NANA74.418NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▁▂▂▃▅▅█4.024.1364.1474.2894.4994.5554.938NANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▇██▅▄▄▄▃▂▂▂▂▁▁▂▂▂▂▁▁7.8149.2488.7555.8585.5634.9875.1253.8083.0693.3932.6292.9392.2642.2282.8162.7923.2683.2232.1521.928NANA0.951NANANA
us-gaap:TaxesPayableCurrent ▆▇█▄▄▅▆▆▄▄▇▃▃▂▂▁▁▂▂▃4.3795.05.4962.9192.6293.3024.1984.0842.8342.9064.5471.9742.1121.4681.7980.8781.1471.2751.5532.173NANA1.047NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
 us-gaap:LongTermDebt us-gaap:DebtInstrument bl:ConvertibleSeniorNotesDue2026█▁872.569859.91NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour▁▁██209.373206.442407.032401.217NANA384.343NANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▆█▃▁▁9.76411.7856.5664.754.733NA4.571NANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent 0.025NANANANANANANANANA2.9823.1553.3143.4593.1192.192.2042.3432.3183.917NANA3.631NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▂▃▃▅▇█6.4457.2157.3567.8288.7249.73410.606NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA3.297NANANA4.1315.3525.2715.115.307NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA2.994NANANA3.0674.1123.9943.7563.786NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA0.484NANANA2.9063.0622.9652.8042.586NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA0.274NANANA0.4732.9012.8052.6472.638NANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA1.019NANANA1.1911.6320.56NA0.237NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:StockholdersEquity ▆▆███▇▇▇▆▅▅▅▅▅▅▅▅▄▅▁337.041339.628422.07416.934409.778396.189398.613396.421327.185320.536321.569322.433314.088317.561294.628295.789296.781284.346291.41152.548NANA166.168NANANA
us-gaap:CommonStockValue ████▇▇▇▇▇▇▆▆▆▆▆▆▆▅▅▁0.5840.580.5770.5730.5690.5640.5590.5560.5530.550.5470.5470.5390.5350.530.5280.5250.5130.5130.413NANA0.407NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇██▇▇▇▇▅▅▅▅▅▅▄▄▄▄▄▁596.183573.431622.768605.078590.119569.799561.275548.201470.681459.118451.571444.84432.068427.104419.628414.915402.859380.288378.272223.805NANA214.171NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▂▃▄▄▄▅▅▅▅▆▆▆▇▆▆▇▇▇█-259.97-234.678-201.651-189.285-181.853-174.24-163.598-152.751-144.348-139.177-130.594-122.862-118.402-109.945-125.467-119.622-106.53-96.416-87.334-71.67NANA-48.156NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▄▄▆█▂▄▅▄▂▂▁▁▁▁▂▁▂▂0.2440.2950.3760.5680.9430.0660.3770.4150.2990.0450.045-0.092-0.117-0.133-0.063-0.032-0.073-0.039-0.041NANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▇▇▆▆▄▄▅▄▃▃▃▃▂▂▄▁▁▁17.54815.20314.65613.68312.979.6369.64210.268.1266.5156.2785.4765.5144.0443.1359.1482.0171.8792.024NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄█▄▆▃▃▃▃▃▁▂▂▂▁▁▁12.38828.50514.81221.7899.6178.5178.2249.8548.623.0264.8234.8144.6811.8222.753.507NANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▄▅▅██▁▆▆▆▆▆▆▆▆▆-220.045-138.845-62.828-87.845142.959181.308-420.39611.0681.393-0.515-2.083-2.62-6.292-4.9822.129-5.28NANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▁▁▁▁▁▆▁▁▁▁▁▁▁▁2.73591.3747.4892.438.0180.9254.262443.8663.3491.0354.777.343-0.5852.9941.582.911NANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃█▄▄▅▆▁█▄▄▄▄▄▄▄▄▄▄-204.921480.824-40.437-63.538160.636190.75-407.957464.93213.5823.497.7769.537-2.196-0.1666.4591.1380.0591.33NANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:IncreaseDecreaseInAccountsPayable ▄▅▄▁▃▅█▄▃▅▄▅▁▃▇▃▅▂▄▅▅▅▄0.1140.6520.21-3.891-1.9311.2534.835-0.525-1.8920.8260.3930.509-3.981-0.9294.16-1.6980.766-3.2530.2941.1750.6541.421-0.147NANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▁▇▃▆▂█▅▆▄▆▅▅▄▇▅▄▅▅▆▅▅▄11.311-20.9817.29-7.1527.742-12.14720.5073.1846.604-2.33311.4722.3874.406-5.05816.3192.31-0.3641.5955.6088.525-0.0911.499-0.744NANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄█▄▆▃▃▃▃▃▁▂▂▂▁▁▁12.38828.50514.81221.7899.6178.5178.2249.8548.623.0264.8234.8144.6811.8222.753.507NANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▁▅▇▇▆▇▇█▇▇█▇▇█▆▇▇▆█▇▇▇▇██-25.446-38.964-16.985-8.751-8.332-12.843-9.186-9.242-5.225-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664-6.619-7.541-9.335-7.207-6.735-6.538-4.254
 us-gaap:NetIncomeLoss us-gaap:Restatement srt:RevisionOfPriorPeriodErrorCorrectionAdjustmentNANANA-1.5-0.61.20.50.4NANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▁▃▆▇▅▇▇█-0.154-5.937-4.619-1.319-0.719-2.201-0.94-0.839-0.054NANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▃▁▆▇▇▆▇▇█▇▇█▇▇█▆▇▇▅-25.292-33.027-12.366-7.432-7.613-10.642-8.246-8.367-5.308-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664NANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementScenario,us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount us-gaap:ScenarioAdjustment,bl:RedeemableNonControllingInterestAdjustmentNANANA-1.5NANANA-0.4NANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▃▁▆▇▇▆▇▇█▇▇█▇▇█▆▇▇-25.576-33.224-12.634-7.857-7.941-10.97-8.712-8.912-5.39-8.833-7.794-4.46-8.457-7.155-4.166-12.074-9.126-7.685NANANANANANANANA
us-gaap:ShareBasedCompensation █▇▇▆▆▅▅▅▄▃▃▃▃▂▂▃▁▁▁▁▁▁▁17.06514.79414.29213.32612.6169.4569.44710.1418.0126.4526.1885.345.3933.9743.0935.81.9871.8491.9921.361.5491.6251.627NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▄▅▅██▁▆▆▆▆▆▆▆▆▆-220.045-138.845-62.828-87.845142.959181.308-420.39611.0681.393-0.515-2.083-2.62-6.292-4.9822.129-5.28NANANANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▃█▁▃▃▃▃▂▃▄▂▄▄▁▅▂▁▁▁▁▁▆0.6261.0963.9980.2911.0721.1521.1711.4720.8861.1031.6960.8922.0621.6340.2732.6110.630.4880.4160.4060.4930.4092.748NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▁▁▁▁▁▆▁▁▁▁▁▁▁▁2.73591.3747.4892.438.0180.9254.262443.8663.3491.0354.777.343-0.5852.9941.582.911NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value584000.0580000.0577000.0573000.0569000.0564000.0559000.0556000.0553000.0550000.0547000.0547000.0539000.0535000.0530000.0528000.0525000.0513000.0513000.0413000.0407000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Shares Outstanding

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value5858575756565555555554545353525252515141404040
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5857575656555554545353525151
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value5857575656555554545353525151
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-31
Value5128000.05378000.05618000.06660000.07053100.06474800.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value3021000.03237000.03705000.05017000.05870000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount58.960.265.975.383.2

us-gaap:RestrictedStockUnitsRSU


Antidilutive
Period End2021-03-312020-03-312019-03-312018-03-31
Value2107000.01458000.01230000.0960000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount41.127.121.914.4

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:DebtConversionByUniqueDescription, us-gaap:DebtInstrument

bl:ConvertibleNotes, bl:CertainCorporateEventsOccurPriorToMaturityDateOrCompanyIssuesNoticeOfRedemption, bl:ConvertibleSeniorNotesDue2026


Antidilutive
Period End2021-03-31
Value9900000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount193.1

bl:ConvertibleNotes, bl:CertainCorporateEventsOccurPriorToMaturityDateOrCompanyIssuesNoticeOfRedemption, bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Antidilutive
Period End2021-03-31
Value4700000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount91.7

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities, us-gaap:DebtInstrument

bl:ConvertibleNotes, bl:ConvertibleSeniorNotesDue2026


Antidilutive
Period End2021-03-31
Value1300000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount25.4

bl:ConvertibleNotes, bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Antidilutive
Period End2021-03-31
Value6200000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount120.9

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.44-0.67-0.3-0.15-0.15-0.23-0.16-0.17-0.09-0.16-0.14-0.08-0.16-0.13-0.11-0.25-0.2-0.18-0.33-0.16-0.19-0.23
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasic us-gaap:Restatement

srt:RevisionOfPriorPeriodErrorCorrectionAdjustment


Earnings
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.03-0.010.020.010.01
Percentage of EarningsPerShareBasic20.06.7-8.7-6.2-5.9

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.44-0.67-0.3-0.15-0.15-0.23-0.16-0.17-0.09-0.16-0.14-0.08-0.16-0.13-0.11-0.25-0.2-0.18-0.33-0.16-0.19-0.23
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareDiluted us-gaap:Restatement

srt:RevisionOfPriorPeriodErrorCorrectionAdjustment


Earnings
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.03-0.010.020.010.01
Percentage of EarningsPerShareDiluted20.06.7-8.7-6.2-5.9

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted us-gaap:StatementScenario, us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:ScenarioAdjustment, bl:RedeemableNonControllingInterestAdjustment


Earnings
Period End2020-09-302019-09-30
Value-0.03-0.01
Percentage of EarningsPerShareBasicAndDiluted100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value17141413129.4569.447108.0126.4526.1885.345.3933.9743.0939.1151.9871.8491.9921.361.5491.6251.6271.56
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.715.014.914.815.211.411.813.511.510.19.99.19.77.76.220.14.74.85.64.25.36.16.67.2

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value2.2271.751.9961.8711.7061.3231.3361.4311.1590.8880.8760.8690.6820.8380.2940.3340.2710.250.290.150.1340.1410.1150.126
Percentage of AllocatedShareBasedCompensationExpense13.111.814.014.013.514.014.114.114.513.814.216.312.621.19.53.713.613.514.611.08.78.77.18.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.21.82.12.12.01.61.71.91.71.41.41.51.21.60.60.70.60.70.80.50.50.50.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value6.1125.1823.9153.8263.5982.5112.6982.7362.061.6261.751.6381.7281.270.9240.7840.7530.8560.7690.5110.5810.6510.6730.672
Percentage of AllocatedShareBasedCompensationExpense35.835.027.428.728.526.628.627.025.725.228.330.732.032.029.98.637.946.338.637.637.540.141.443.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.05.24.14.24.33.03.43.73.02.52.82.83.12.51.81.71.82.22.21.62.02.52.73.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value2.8652.6112.481.9541.7351.2291.0981.4521.2350.9440.8150.6510.6750.4290.2330.2360.2150.0830.2770.1980.1730.1610.1680.16
Percentage of AllocatedShareBasedCompensationExpense16.817.617.414.713.813.011.614.315.414.613.212.212.510.87.52.610.84.513.914.611.29.910.310.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.62.62.22.11.51.41.91.81.51.31.11.20.80.50.50.50.20.80.60.60.60.70.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value5.8615.2515.9015.6755.5774.3934.3154.5223.5582.9942.7472.1822.3081.4371.6427.7610.7480.660.6560.5010.6610.6720.6710.602
Percentage of AllocatedShareBasedCompensationExpense34.335.541.342.644.246.545.744.644.446.444.440.942.836.253.185.137.635.732.936.842.741.441.238.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.75.36.26.36.75.35.46.05.14.74.43.74.22.83.317.11.81.71.91.62.32.52.72.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-25343000.0-33108000.0-12558000.0-7807000.0-6736000.0-10953000.0-8583000.0-8421000.0-4917000.0-8449000.0-7595000.0-4435000.0-8441000.0-7225000.0-5876000.0-13051000.0-10148000.0-9008000.0-15705000.0-6619000.0-7541000.0-9335000.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.8-33.5-13.1-8.7-8.1-13.3-10.7-11.2-7.1-13.2-12.2-7.6-15.2-14.1-11.7-28.7-24.2-23.6-44.4-20.6-26.0-35.1

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-281000.0-302000.0-223000.0-381000.0-307000.0-328000.0-488000.0-504000.0-111000.0-212000.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.3-0.2-0.4-0.4-0.4-0.6-0.7-0.2-0.3

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25624000.0-33410000.0-12781000.0-8188000.0-7043000.0-11281000.0-9071000.0-8925000.0-5028000.0-8661000.0-7525000.0-4435000.0-8441000.0-7225000.0
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.1-33.8-13.4-9.1-8.5-13.7-11.3-11.9-7.2-13.5-12.1-7.6-15.2-14.1

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value23211916161615151413131311111010109.2328.6677.5417.0636.946.3475.943
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.122.120.018.820.119.418.820.421.521.222.323.021.422.621.923.924.724.224.523.424.326.125.927.4

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:SubscriptionAndCirculation


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1715131111111011111011119.4939.3818.8688.688.227
Percentage of CostOfGoodsAndServicesSold72.870.568.968.969.470.871.876.477.579.582.082.780.080.881.079.879.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.815.613.813.014.013.813.515.616.616.918.319.017.118.317.719.119.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SubscriptionAndCirculation18.016.80.013.914.914.80.016.617.517.70.019.917.919.30.020.220.7

us-gaap:TechnologyService


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value6.4056.4655.9715.2825.1154.6854.2623.6033.3562.7862.5052.3432.3732.2252.0792.1912.13
Percentage of CostOfGoodsAndServicesSold27.229.531.131.130.629.228.223.622.520.518.017.320.019.219.020.220.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.36.56.25.96.15.75.34.84.84.34.04.04.34.34.24.85.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TechnologyService92.189.80.084.194.684.20.078.193.397.60.091.498.683.70.091.699.1

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value23211916161615151413131311111010109.2328.6677.5417.0636.946.3475.943
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.122.120.018.820.119.418.820.421.521.222.323.021.422.622.024.024.724.224.523.424.326.125.927.4

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value889583756973696760595650524744483937353130292825
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax86.496.887.583.483.989.487.190.187.193.391.285.594.592.189.9106.194.798.7100.198.8104.1110.8114.8118.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-302021-03-31
Value0-7012000.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-7.1

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value2028201716171514121312111211118.928.6368.2538.2787.6985.9565.9795.965.916
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.828.621.219.719.421.019.518.818.221.319.919.222.521.622.319.620.621.623.423.920.522.524.427.3

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7876767366666559545048454339393431292624211918151313
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.977.980.081.279.980.681.279.678.578.877.777.078.677.478.577.076.077.075.576.675.773.974.172.671.872.6

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-25.253-33.415-12.803-7.302-7.982-10.613-7.843-8.706-5.244-8.628-7.762-4.443-8.324-7.175-5.388-12.93-10.101-9.075-17.687-8.461-8.938-10.66-10.962-10.584
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.7-33.8-13.4-8.1-9.6-12.8-9.8-11.6-7.5-13.5-12.5-7.6-15.0-14.0-10.8-28.5-24.1-23.8-50.0-26.3-30.8-40.1-44.8-48.9

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value323000.0-191000.0-169000.0555000.0-41000.0357000.01168000.0206000.0146000.0205000.032000.017000.0133000.0-20000.0457000.0162000.013000.0-65000.0-2023000.0-1842000.0-1397000.0-1325000.0-3755000.0-3849000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-0.2-0.20.6-0.00.41.50.30.20.30.10.00.2-0.00.90.40.0-0.2-5.7-5.7-4.8-5.0-15.3-17.8

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value15145.9715.9145.7415.6855.6443.0060.00.00.00.0040.00.0060.0030.0042.7981.2940.9790.8650.7490.822
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.315.06.26.66.96.97.04.00.00.00.00.00.00.00.00.07.94.03.43.33.13.8

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-25.446-38.964-16.985-8.751-8.332-12.843-9.186-9.242-5.225-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664-6.619-7.541-9.335-7.207-6.735-6.538-4.254
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.9-39.4-17.7-9.7-10.0-15.5-11.4-12.3-7.5-13.4-12.4-7.6-15.3-14.0-11.7-28.8-24.1-23.6-44.3-20.6-26.0-35.1-29.4-31.1-33.7-23.6

us-gaap:NetIncomeLoss us-gaap:Restatement

srt:RevisionOfPriorPeriodErrorCorrectionAdjustment


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value-1.5-0.61.20.50.4
Percentage of NetIncomeLoss17.17.2-9.3-5.4-4.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.7-0.71.50.60.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:RevisionOfPriorPeriodErrorCorrectionAdjustment0.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-0.154-5.937-4.619-1.319-0.719-2.201-0.94-0.839-0.054
Percentage of NetIncomeLoss0.615.227.215.18.617.110.29.11.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-6.0-4.8-1.5-0.9-2.7-1.2-1.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-25.292-33.027-12.366-7.432-7.613-10.642-8.246-8.367-5.308-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664
Percentage of NetIncomeLoss99.484.872.884.991.482.989.890.5101.6100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.8-33.4-12.9-8.2-9.1-12.9-10.3-11.2-7.6-13.4-12.4-7.6-15.3-14.0-11.7-28.8-24.1-23.6-44.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementScenario, us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount

us-gaap:ScenarioAdjustment, bl:RedeemableNonControllingInterestAdjustment


Net
Period End2020-09-302019-09-30
Value-1.5-0.4
Percentage of NetIncomeLoss17.14.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.7-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ScenarioAdjustment bl:RedeemableNonControllingInterestAdjustment0.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-284000.0-197000.0-268000.0-425000.0-328000.0-328000.0-1359000.0330000.0-165000.0-250000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.2-0.3-0.5-0.4-0.4-1.70.4-0.2-0.4

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-9.672-18.705-7.192-2.036-3.326-7.337-4.737-7.861-5.978-9.323-8.424-5.021-8.831-7.56-5.708-13.205-7.852-8.295-8.709-7.167-8.259-9.799-9.963-9.842
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.5-18.9-7.5-2.3-4.0-8.9-5.9-10.5-8.6-14.5-13.5-8.5-15.9-14.7-11.4-29.1-18.7-21.7-24.6-22.3-28.5-36.9-40.7-45.4

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value6000.0-210000.090000.088000.042000.0-47000.010000.0220000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.20.10.10.1-0.10.00.3

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-48000.0-186000.0-147000.0-331000.0898000.0-311000.0-60000.0-13000.0362000.0172000.0269000.025000.016000.0-70000.0-31000.041000.0-34000.02000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.2-0.2-0.41.1-0.4-0.1-0.00.50.30.40.00.0-0.1-0.10.1-0.10.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-15581000.0-14710000.0-5611000.0-5266000.0-4656000.0-3276000.0-3106000.0-845000.0734000.0695000.0662000.0578000.0507000.0385000.0320000.0275000.0-2249000.0-780000.0-8978000.0-1294000.0-679000.0-861000.0-999000.0-742000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-15.3-14.9-5.9-5.8-5.6-4.0-3.9-1.11.11.11.11.00.90.80.60.6-5.4-2.0-25.4-4.0-2.3-3.2-4.1-3.4

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-25.576-33.224-12.634-7.857-7.941-10.97-8.712-8.912-5.39-8.833-7.794-4.46-8.457-7.155-4.166-12.074-9.126-7.685
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.0-33.6-13.2-8.7-9.5-13.3-10.9-11.9-7.7-13.8-12.5-7.6-15.3-14.0-8.3-26.6-21.7-20.1

Research And Development Expense

us-gaap:ResearchAndDevelopmentExpense

us-gaap:ResearchAndDevelopmentExpense


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value181818141111101110108.7537.2617.8116.9296.0345.8836.0095.9485.5735.0875.1935.2725.2784.904
Percentage of ResearchAndDevelopmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.419.218.816.414.214.212.815.415.516.114.012.414.113.512.113.014.315.615.815.817.919.821.622.6

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10298959083828074696462585551504541383532292624211918
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:SubscriptionAndCirculation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value9591898377777470666159565348474339
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax93.292.793.893.093.593.393.293.894.895.595.695.695.794.895.394.794.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax93.292.793.893.093.593.393.293.894.895.595.695.695.794.895.394.794.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SubscriptionAndCirculation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TechnologyService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value6.9527.2015.9286.2825.4055.5635.4624.6143.5982.8552.7522.5642.4072.6592.3582.3922.149
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.87.36.27.06.56.76.86.25.24.54.44.44.35.24.75.35.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.87.36.27.06.56.76.86.25.24.54.44.44.35.24.75.35.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TechnologyService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value737271686262605853504846434139363431
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.972.974.475.574.675.875.978.277.178.278.179.778.780.079.880.081.181.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.972.974.475.574.675.875.978.277.178.278.179.778.780.079.880.081.181.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2826242221201916151313111110109.0947.9186.966
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.127.125.624.525.424.224.121.822.921.821.920.321.320.020.220.018.918.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.127.125.624.525.424.224.121.822.921.821.920.321.320.020.220.018.918.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10298959083828074696462585551504542383532292624211918
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.4101.0100.7101.2100.0100.0100.0100.0100.0100.0100.0100.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value494845424144434137353531322927332523211919181614
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.249.047.447.250.254.254.855.953.455.957.354.058.057.055.573.559.861.560.959.165.768.468.968.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1732170811131046103310111014975523504493474464458440422417416420331286
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value13761351678621616608611574192180167152150140146126121131129178120
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets79.579.161.059.459.660.260.258.936.735.734.032.132.430.733.229.929.031.730.753.942.1

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1732170811131046103310111014975523504493474464458440422417416420331286
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value337339422416409396398396327320321322314317294295296284291152166183193
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.519.937.939.839.739.239.340.662.563.565.167.967.669.366.870.171.068.369.346.157.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0.2440.2950.3760.5680.9430.0660.3770.4150.2990.0450.045-0.092-0.117-0.133-0.063-0.032-0.073-0.039-0.041
Percentage of StockholdersEquity0.10.10.10.10.20.00.10.10.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.10.10.00.00.00.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value596573622605590569561548470459451444432427419414402380378223214207200
Percentage of StockholdersEquity176.9168.8147.6145.1144.0143.8140.8138.3143.9143.2140.4138.0137.6134.5142.4140.3135.7133.7129.8146.7128.9112.6103.2
Percentage of Assets34.433.655.957.857.156.355.356.289.990.991.493.793.093.195.298.396.491.490.067.674.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value0.5840.580.5770.5730.5690.5640.5590.5560.5530.550.5470.5470.5390.5350.530.5280.5250.5130.5130.4130.4070.4050.401
Percentage of StockholdersEquity0.20.20.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.30.20.20.2
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value-259.97-234.678-201.651-189.285-181.853-174.24-163.598-152.751-144.348-139.177-130.594-122.862-118.402-109.945-125.467-119.622-106.53-96.416-87.334-71.67-48.156-23.422-6.67
Percentage of StockholdersEquity-77.1-69.1-47.8-45.4-44.4-44.0-41.0-38.5-44.1-43.4-40.6-38.1-37.7-34.6-42.6-40.4-35.9-33.9-30.0-47.0-29.0-12.7-3.4
Percentage of Assets-15.0-13.7-18.1-18.1-17.6-17.2-16.1-15.7-27.6-27.6-26.4-25.9-25.5-24.0-28.5-28.3-25.5-23.2-20.8-21.6-16.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value128712676747537397207236892352192212041921861931721671621636848
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets74.374.260.572.071.671.271.370.645.043.444.943.141.540.744.040.940.139.039.020.516.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-31
Value643848367408471310120528634946382830312423232219131315182514
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.149.633.039.045.630.711.954.112.19.89.48.16.26.77.15.85.65.65.35.90.00.05.30.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value6438483674084713111205286349463829313125232322
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.249.733.039.045.730.811.954.212.19.99.48.16.36.87.15.95.75.75.4

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value100891119198901028179727463615761454343423624
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.85.210.08.79.58.910.18.415.114.315.213.413.112.414.010.710.410.510.111.18.5

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value182020137151612101112141516156.146.7946.9277.7776.6144.4562.801
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.21.813.11.51.61.31.12.22.42.83.43.63.41.41.61.71.91.61.31.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value373126211615
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0
Percentage of Assets3.33.15.44.83.95.4

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value13106.5984.9193.2872.173
Percentage of PropertyPlantAndEquipmentGross36.433.424.823.120.214.0
Percentage of Assets1.21.01.31.10.80.8
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312017-12-312016-12-312015-12-31
Value0.0170.5280.180.5231.274
Percentage of PropertyPlantAndEquipmentGross0.01.70.83.28.2
Percentage of Assets0.00.10.00.10.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.8062.6062.5712.2041.7251.852
Percentage of PropertyPlantAndEquipmentGross7.68.39.710.310.612.0
Percentage of Assets0.30.30.50.50.40.6
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1010109.0756.8887.67
Percentage of PropertyPlantAndEquipmentGross27.532.137.942.642.449.6
Percentage of Assets0.91.02.02.11.62.7
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value107.7457.3564.9343.8292.501
Percentage of PropertyPlantAndEquipmentGross28.524.527.723.223.616.2
Percentage of Assets0.90.81.51.10.90.9
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2318138.5434.9343.051
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0
Percentage of Assets2.11.82.61.91.21.1

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value111213101213131213131313131312121011111112
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.71.21.01.21.31.31.32.62.72.72.83.02.92.92.92.62.72.73.64.3

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-31
Value289289289185185185185185185185185185185185185185185185185185163163
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.717.026.017.717.918.318.219.035.436.737.539.039.940.442.043.944.344.544.055.956.90.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

bl:RimiliaHoldingsLtd


Goodwillus-gaap:
Period End2020-10-02
Value104
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets bl:RimiliaHoldingsLtd0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value404346151615171921242730343740444750545756
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.64.21.41.61.61.72.04.14.95.66.57.48.29.310.511.412.212.917.319.8

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value461727405456
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0
Percentage of Assets4.21.75.69.312.919.8

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value168.37912162019
Percentage of FiniteLivedIntangibleAssetsNet35.247.844.139.637.034.8
Percentage of Assets1.50.82.53.74.86.9
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value233.2888.086142122
Percentage of FiniteLivedIntangibleAssetsNet51.218.829.136.740.439.6
Percentage of Assets2.10.31.63.45.27.9
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.0

us-gaap:PatentedTechnology


Finite
Period End2020-12-31
Value2.097
Percentage of FiniteLivedIntangibleAssetsNet4.5
Percentage of Assets0.2
Percentage of Assets us-gaap:PatentedTechnology0.0

us-gaap:TradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value4.2575.8537.4499.0471012
Percentage of FiniteLivedIntangibleAssetsNet9.133.426.822.219.621.5
Percentage of Assets0.40.61.52.12.54.3
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value7.9118.6348.7089.27410111213131314
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.80.91.01.11.21.42.62.70.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value74686558565452464439363230281.3911.8571.5171.4711.4494.7472.895
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.05.95.65.45.35.24.88.57.87.56.86.66.20.30.40.40.40.31.41.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value3.8693.3653.152.0886.172117.4011.6142.9634.1733.4422.9022.4966.5667.2542.9345.0554.2697.1658.4564.648
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.30.20.61.10.70.20.60.80.70.60.51.41.60.71.21.01.72.61.6

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value206193191165167161162144144133129118117104
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.911.317.215.816.215.916.014.827.626.326.124.925.323.6

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value2592482422032021992061781741621591431411311371171111101089774
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.014.521.819.519.619.720.418.333.432.232.230.230.428.731.127.826.826.525.829.526.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4020000.04136000.04147000.04289000.04499000.04555000.04938000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.40.40.40.50.5

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value7814000.09248000.08755000.05858000.05563000.04987000.05125000.03808000.03069000.03393000.02629000.02939000.02264000.02228000.02816000.02792000.03268000.03223000.02152000.01928000.0951000.0
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.80.60.50.50.50.40.60.70.50.60.50.50.60.70.80.80.50.60.3

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value4379000.05000000.05496000.02919000.02629000.03302000.04198000.04084000.02834000.02906000.04547000.01974000.02112000.01468000.01798000.0878000.01147000.01275000.01553000.02173000.01047000.0
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.50.30.30.30.40.40.50.60.90.40.50.30.40.20.30.30.40.70.4

Long Term Debt

us-gaap:LongTermDebt us-gaap:DebtInstrument

us-gaap:LongTermDebt

bl:ConvertibleSeniorNotesDue2026


Long
Period End2021-06-302021-03-31
Value872859
Percentage of LongTermDebt100.0100.0
Percentage of Assets50.450.3
Percentage of Assets bl:ConvertibleSeniorNotesDue20260.00.0

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Long
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value209206407401384
Percentage of LongTermDebt24.024.00.00.00.0
Percentage of Assets12.112.136.638.337.9
Percentage of Assets bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour0.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value9.764116.5664.754.7334.571
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.60.50.50.5

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value25000.02982000.03155000.03314000.03459000.03119000.02190000.02204000.02343000.02318000.03917000.03631000.0
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.60.70.70.80.70.50.50.60.61.21.3

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6.4457.2157.3567.8288.7249.73410
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.70.70.81.01.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3297000.04131000.05352000.05271000.05110000.05307000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.51.01.01.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2994000.03067000.04112000.03994000.03756000.03786000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.40.80.70.8

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value484000.02906000.03062000.02965000.02804000.02586000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.30.30.60.60.5

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value274000.0473000.02901000.02805000.02647000.02638000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.30.50.50.5

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value1019000.01191000.01632000.0560000.0237000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.20.10.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value111516161718
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.51.73.23.40.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value121718181921
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.71.93.63.84.4

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value1209000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value337339422416409396398396327320321322314317294295296284291152166183193
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets19.519.937.939.839.739.239.340.662.563.565.167.967.669.366.870.171.068.369.346.157.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value0.2440.2950.3760.5680.9430.0660.3770.4150.2990.0450.045-0.092-0.117-0.133-0.063-0.032-0.073-0.039-0.041
Percentage of StockholdersEquity0.10.10.10.10.20.00.10.10.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.10.10.00.00.00.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value596573622605590569561548470459451444432427419414402380378223214207200
Percentage of StockholdersEquity176.9168.8147.6145.1144.0143.8140.8138.3143.9143.2140.4138.0137.6134.5142.4140.3135.7133.7129.8146.7128.9112.6103.2
Percentage of Assets34.433.655.957.857.156.355.356.289.990.991.493.793.093.195.298.396.491.490.067.674.70.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value0.5840.580.5770.5730.5690.5640.5590.5560.5530.550.5470.5470.5390.5350.530.5280.5250.5130.5130.4130.4070.4050.401
Percentage of StockholdersEquity0.20.20.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.30.20.20.2
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-31
Value-259.97-234.678-201.651-189.285-181.853-174.24-163.598-152.751-144.348-139.177-130.594-122.862-118.402-109.945-125.467-119.622-106.53-96.416-87.334-71.67-48.156-23.422-6.67
Percentage of StockholdersEquity-77.1-69.1-47.8-45.4-44.4-44.0-41.0-38.5-44.1-43.4-40.6-38.1-37.7-34.6-42.6-40.4-35.9-33.9-30.0-47.0-29.0-12.7-3.4
Percentage of Assets-15.0-13.7-18.1-18.1-17.6-17.2-16.1-15.7-27.6-27.6-26.4-25.9-25.5-24.0-28.5-28.3-25.5-23.2-20.8-21.6-16.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value584000.0580000.0577000.0573000.0569000.0564000.0559000.0556000.0553000.0550000.0547000.0547000.0539000.0535000.0530000.0528000.0525000.0513000.0513000.0413000.0407000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value596573622605590569561548470459451444432427419414402380378223214
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.433.655.957.857.156.355.356.289.990.991.493.793.093.195.298.396.491.490.067.674.7

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value-259.97-234.678-201.651-189.285-181.853-174.24-163.598-152.751-144.348-139.177-130.594-122.862-118.402-109.945-125.467-119.622-106.53-96.416-87.334-71.67-48.156
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-15.0-13.7-18.1-18.1-17.6-17.2-16.1-15.7-27.6-27.6-26.4-25.9-25.5-24.0-28.5-28.3-25.5-23.2-20.8-21.6-16.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value244000.0295000.0376000.0568000.0943000.066000.0377000.0415000.0299000.045000.045000.0-92000.0-117000.0-133000.0-63000.0-32000.0-73000.0-39000.0-41000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.10.00.00.00.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value17151413129.6369.642108.1266.5156.2785.4765.5144.0443.1359.1482.0171.8792.024
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value17151413129.6369.642108.1266.5156.2785.4765.5144.0443.1359.1482.0171.8792.024
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value122814219.6178.5178.2249.8548.623.0264.8234.8144.6811.8222.753.507
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.128.815.524.211.510.310.213.212.44.77.78.28.43.65.57.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-220.045-138.845-62.828-87.845142181-420.396111.393-0.515-2.083-2.62-6.292-4.9822.129-5.28
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-215.5-140.5-65.6-97.4171.7219.5-523.814.82.0-0.8-3.3-4.5-11.3-9.74.3-11.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.735917.4892.438.0180.9254.2624433.3491.0354.777.343-0.5852.9941.582.911
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.7598.27.82.79.61.15.3592.44.81.67.712.5-1.15.83.26.4

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-204.921480-40.437-63.538160190-407.957464133.497.7769.537-2.196-0.1666.4591.1380.0591.33
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-200.7486.4-42.2-70.5192.9230.9-508.3620.519.55.412.516.2-4.0-0.312.92.50.13.5

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value114000.0652000.0210000.0-3891000.0-1931000.01253000.04835000.0-525000.0-1892000.0826000.0393000.0509000.0-3981000.0-929000.04160000.0-1698000.0766000.0-3253000.0294000.01175000.0654000.01421000.0-147000.0
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value11-20.9817-7.1527.742-12.147203.1846.604-2.333112.3874.406-5.058162.31-0.3641.5955.6088.525-0.0911.499-0.744
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value122814219.6178.5178.2249.8548.623.0264.8234.8144.6811.8222.753.507
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.128.815.524.211.510.310.213.212.44.77.78.28.43.65.57.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-25.446-38.964-16.985-8.751-8.332-12.843-9.186-9.242-5.225-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664-6.619-7.541-9.335-7.207-6.735-6.538-4.254
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.9-39.4-17.7-9.7-10.0-15.5-11.4-12.3-7.5-13.4-12.4-7.6-15.3-14.0-11.7-28.8-24.1-23.6-44.3-20.6-26.0-35.1-29.4-31.1-33.7-23.6

us-gaap:NetIncomeLoss us-gaap:Restatement

srt:RevisionOfPriorPeriodErrorCorrectionAdjustment


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value-1.5-0.61.20.50.4
Percentage of NetIncomeLoss17.17.2-9.3-5.4-4.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.7-0.71.50.60.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:RevisionOfPriorPeriodErrorCorrectionAdjustment0.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-0.154-5.937-4.619-1.319-0.719-2.201-0.94-0.839-0.054
Percentage of NetIncomeLoss0.615.227.215.18.617.110.29.11.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-6.0-4.8-1.5-0.9-2.7-1.2-1.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-25.292-33.027-12.366-7.432-7.613-10.642-8.246-8.367-5.308-8.583-7.732-4.46-8.457-7.155-5.845-13.092-10.114-9.01-15.664
Percentage of NetIncomeLoss99.484.872.884.991.482.989.890.5101.6100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.8-33.4-12.9-8.2-9.1-12.9-10.3-11.2-7.6-13.4-12.4-7.6-15.3-14.0-11.7-28.8-24.1-23.6-44.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementScenario, us-gaap:ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementByRestatementPeriodAndAmount

us-gaap:ScenarioAdjustment, bl:RedeemableNonControllingInterestAdjustment


Net
Period End2020-09-302019-09-30
Value-1.5-0.4
Percentage of NetIncomeLoss17.14.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.7-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ScenarioAdjustment bl:RedeemableNonControllingInterestAdjustment0.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-25.576-33.224-12.634-7.857-7.941-10.97-8.712-8.912-5.39-8.833-7.794-4.46-8.457-7.155-4.166-12.074-9.126-7.685
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-25.0-33.6-13.2-8.7-9.5-13.3-10.9-11.9-7.7-13.8-12.5-7.6-15.3-14.0-8.3-26.6-21.7-20.1

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value17141413129.4569.447108.0126.4526.1885.345.3933.9743.0935.81.9871.8491.9921.361.5491.6251.627
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-220.045-138.845-62.828-87.845142181-420.396111.393-0.515-2.083-2.62-6.292-4.9822.129-5.28
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-215.5-140.5-65.6-97.4171.7219.5-523.814.82.0-0.8-3.3-4.5-11.3-9.74.3-11.6

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.6261.0963.9980.2911.0721.1521.1711.4720.8861.1031.6960.8922.0621.6340.2732.6110.630.4880.4160.4060.4930.4092.748
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.735917.4892.438.0180.9254.2624433.3491.0354.777.343-0.5852.9941.582.911
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.7598.27.82.79.61.15.3592.44.81.67.712.5-1.15.83.26.4

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302015-12-31
Value2940000.03021000.02944000.03216000.03516000.03237000.03486000.03696000.03973000.03705000.03820000.03772000.04515000.05017000.05019000.05874200.05246500.05904400.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302015-12-31
Value35.0326.9221.8513.910.099.498.62
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value78000.0376000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:RestrictedStockUnitsRSU, bl:RimiliaHoldingsLtd, us-gaap:SubsequentEvent


Share
Period End2020-10-02
Value100000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:RestrictedStockUnitsRSU, us-gaap:SubsequentEvent


Share
Period End2020-10-302019-02-252018-11-062018-08-082018-03-06
Value100000.0200000.0100000.0200000.0700000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.00.00.00.00.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value6548000.04571000.0729000.01300000.01436000.01501000.01328000.0993000.01144000.01100000.01262000.03874000.05907000.0
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value444417132218
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2523000.01737000.01223000.0672000.0382000.0278000.0188000.0153000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value373045298.4890.8870.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.00.0

bl:AdjustmentToAdditionalPaidInCapitalPurchaseOfCappedCalls

bl:AdjustmentToAdditionalPaidInCapitalPurchaseOfCappedCalls


Adjustment
Period End2021-06-302021-03-312019-12-312019-09-30
Value0.01020.046
Percentage of AdjustmentToAdditionalPaidInCapitalPurchaseOfCappedCalls0.0100.00.0100.0

bl:AdjustmentToAdditionalPaidInCapitalPurchaseOfCappedCalls us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustment
Period End2021-06-302021-03-312019-12-312019-09-30
Value0.01020.046
Percentage of AdjustmentToAdditionalPaidInCapitalPurchaseOfCappedCalls0.0100.00.0100.0

bl:CapitalizedSoftwareDevelopmentCostsIncludedInAccountsPayableAndAccruedExpensesAndOtherLiabilitiesCurrent

bl:CapitalizedSoftwareDevelopmentCostsIncludedInAccountsPayableAndAccruedExpensesAndOtherLiabilitiesCurrent


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value271000.0365000.0341000.0-69000.0142000.0388000.0378000.069000.0-27000.0140000.031000.064000.065000.0199000.0180000.055000.051000.045000.046000.025000.047000.035000.0
Percentage of CapitalizedSoftwareDevelopmentCostsIncludedInAccountsPayableAndAccruedExpensesAndOtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:CappedCallsCost

bl:CappedCallsCost


Capped
Period End2021-06-302021-03-312019-08-13
Value0.010246
Percentage of CappedCallsCost0.0100.0100.0

bl:CouponInterestExpense

bl:CouponInterestExpense


Coupon
Period End2020-09-30
Value200000.0
Percentage of CouponInterestExpense100.0

bl:CouponInterestExpense us-gaap:DebtInstrument

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Coupon
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-30
Value100000.0100000.0200000.0200000.0100000.0100000.0
Percentage of CouponInterestExpense0.00.00.00.00.00.0

bl:DebtIssuanceCosts us-gaap:DebtInstrument

bl:DebtIssuanceCosts

bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-03-10
Value21
Percentage of DebtIssuanceCosts100.0

bl:DebtRepurchaseAmountPercentagePriorToMaturity us-gaap:DebtInstrument

bl:DebtRepurchaseAmountPercentagePriorToMaturity

bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-03-10
Value100.0
Percentage of DebtRepurchaseAmountPercentagePriorToMaturity100.0

bl:NetIncomeLossAdjustmentAttributableToRedeemableNonControllingInterest

bl:NetIncomeLossAdjustmentAttributableToRedeemableNonControllingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-130000.05740000.04351000.0894000.0391000.01873000.0474000.0330000.0-165000.0-250000.0
Percentage of NetIncomeLossAdjustmentAttributableToRedeemableNonControllingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:NetIncomeLossAttributableToRedeemableNoncontrollingInterestExcludingAdjustments

bl:NetIncomeLossAttributableToRedeemableNoncontrollingInterestExcludingAdjustments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-284000.0-197000.0-328000.0-328000.0
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterestExcludingAdjustments100.0100.0100.0100.0

bl:NetIncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest

bl:NetIncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-268000.0-425000.0-328000.0-328000.0-466000.0-509000.0-219000.0-250000.0
Percentage of NetIncomeLossExcludingPortionAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0

bl:NonCashLeaseExpense

bl:NonCashLeaseExpense


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1160000.01025000.01096000.01186000.01141000.01230000.01336000.01217000.01215000.01245000.0
Percentage of NonCashLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:OperatingLeasePaymentsExcludingInterest

bl:OperatingLeasePaymentsExcludingInterest


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value1364000.01058000.01138000.01253000.0
Percentage of OperatingLeasePaymentsExcludingInterest100.0100.0100.0100.0

bl:PaymentsToAcquireBusinessesNetOfWorkingCapitalAdjustments us-gaap:BusinessAcquisition

bl:PaymentsToAcquireBusinessesNetOfWorkingCapitalAdjustments

bl:RimiliaHoldingsLtd


Payments
Period End2020-10-02
Value121
Percentage of PaymentsToAcquireBusinessesNetOfWorkingCapitalAdjustments100.0

bl:PaymentsToAcquireBusinessesWorkingCapitalAdjustments us-gaap:BusinessAcquisition

bl:PaymentsToAcquireBusinessesWorkingCapitalAdjustments

bl:RimiliaHoldingsLtd


Payments
Period End2020-10-02
Value200000.0
Percentage of PaymentsToAcquireBusinessesWorkingCapitalAdjustments100.0

bl:PaymentsToAcquireCappedCallsRelatedToConvertibleSeniorNotes

bl:PaymentsToAcquireCappedCallsRelatedToConvertibleSeniorNotes


Payments
Period End2021-06-302021-03-312019-12-31
Value0.01020.0
Percentage of PaymentsToAcquireCappedCallsRelatedToConvertibleSeniorNotes0.0100.00.0

bl:PaymentsToFinancePropertyPlantAndEquipment

bl:PaymentsToFinancePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value252000.0169000.0168000.0169000.056000.0169000.0113000.0169000.0
Percentage of PaymentsToFinancePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0

bl:RedeemableNoncontrollingInterestEquityCarryingAmountAdjustmentOverUnderStatement

bl:RedeemableNoncontrollingInterestEquityCarryingAmountAdjustmentOverUnderStatement


Redeemable
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value1500000.0-600000.01200000.0500000.0400000.0
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmountAdjustmentOverUnderStatement100.0100.0100.0100.0100.0

bl:RedeemableNoncontrollingInterestEquityCarryingAmountAdjustmentOverUnderStatement us-gaap:Restatement

srt:RevisionOfPriorPeriodErrorCorrectionAdjustment


Redeemable
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value-1500000.0-600000.01200000.0500000.0400000.0
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmountAdjustmentOverUnderStatement-100.0100.0100.0100.0100.0

bl:StockBasedCompensationCapitalizedForSoftwareDevelopment

bl:StockBasedCompensationCapitalizedForSoftwareDevelopment


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value508000.0409000.0364000.0357000.0354000.0180000.0195000.0119000.0114000.063000.090000.0136000.0121000.070000.042000.033000.030000.030000.032000.026000.022000.022000.021000.0
Percentage of StockBasedCompensationCapitalizedForSoftwareDevelopment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:StockIssuedDuringPeriodSharesStockOptionsExercisedNetOfSharesWithholdings us-gaap:StatementEquityComponents

bl:StockIssuedDuringPeriodSharesStockOptionsExercisedNetOfSharesWithholdings

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value97000.098000.0245000.0296000.0262000.0231000.0156000.0247000.0118000.0170000.040000.0806000.0393000.0459000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercisedNetOfSharesWithholdings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding

bl:StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.8972.1496.353.875.7594.6542.1993.8051.82.7620.4847.4162.6513.453
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.8962.1486.3483.8675.7564.6512.1983.8031.7992.7610.4847.4082.6473.448
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding100.0100.0100.099.999.999.9100.099.999.9100.0100.099.999.899.9

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0010.0010.0020.0030.0030.0030.0010.0020.0010.0010.00.0080.0040.005
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedNetOfSharesWithholding0.00.00.00.10.10.10.00.10.10.00.00.10.20.1

bl:TransactionCostsAllocatedToLiabilityComponent us-gaap:DebtInstrument

bl:TransactionCostsAllocatedToLiabilityComponent

bl:ConvertibleSeniorNotesDue2026


Transaction
Period End2021-03-10
Value16
Percentage of TransactionCostsAllocatedToLiabilityComponent100.0

bl:TransactionCostsAttributableToEquityComponent us-gaap:DebtInstrument

bl:TransactionCostsAttributableToEquityComponent

bl:ConvertibleSeniorNotesDue2026


Transaction
Period End2021-03-10
Value5100000.0
Percentage of TransactionCostsAttributableToEquityComponent100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value37000.033000.0-176000.0-301000.0111000.0523000.01288000.0100000.0364000.0409000.0326000.0298000.0237000.067000.063000.033000.0-70000.0-63000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4802000.05134000.02058000.01272000.01294000.03562000.0568000.0784000.0859000.01729000.031000.0112000.03197000.016000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4802000.05134000.02058000.01272000.01294000.03562000.0568000.0784000.0859000.01729000.031000.0112000.03197000.016000.0
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt


Adjustments
Period End2021-06-302021-03-312019-12-312019-09-30
Value2.0682660.0111
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt100.0100.00.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312019-12-312019-09-30
Value2.0682660.0111
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt100.0100.00.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments


Adjustments
Period End2021-06-302021-03-31
Value0.0219
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments0.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-31
Value0.0219
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments0.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AmortizationOfFinancingCostsAndDiscounts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value157.6515.8155.85.5845.5325.4872.9
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts us-gaap:DebtInstrument

bl:ConvertibleSeniorNotesDue2026


Amortization
Period End2021-06-302021-03-31
Value102.3
Percentage of AmortizationOfFinancingCostsAndDiscounts66.730.1

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Amortization
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-30
Value2.95.35.65.55.52.9
Percentage of AmortizationOfFinancingCostsAndDiscounts18.669.3100.399.4100.2100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value138
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

bl:RimiliaHoldingsLtd, us-gaap:SubsequentEvent


Business
Period End2020-10-02
Value150
Percentage of BusinessCombinationConsiderationTransferred1108.4

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-782000.07702000.0176000.0-72000.0-221000.0145000.0-267000.0129000.0193000.0-9000.0163000.097000.078000.0112000.0261000.0178000.096000.093000.093000.0135000.081000.062000.02000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-67000.0451000.0-189000.0-238000.0-340000.01386000.0503000.0-919000.0483000.0796000.0113000.0-70000.0-258000.0383000.0251000.0-423000.020000.0445000.0-86000.073000.0-160000.0236000.0-1385000.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value577913285069112339547.62131433.517
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger us-gaap:Range, us-gaap:DebtConversionByUniqueDescription, us-gaap:DebtInstrument

us-gaap:DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger

srt:Minimum, bl:ConditionOne, bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-03-10
Value130.0
Percentage of DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger100.0

us-gaap:DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction

us-gaap:DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction


Debt
Period End2021-03-31
Value312000.0
Percentage of DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction100.0

us-gaap:DeferredFederalStateAndLocalTaxExpenseBenefit

us-gaap:DeferredFederalStateAndLocalTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value47000.07000.0-560000.017000.0149000.013000.01279000.053000.0-338000.0320000.0-480000.0-136000.0
Percentage of DeferredFederalStateAndLocalTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value6.896.5426.2775.1784.8674.574.4715.3275.7875.6895.5695.8365.5375.3945.1855.0874.9084.7914.7344.3564.2234.1114.109
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-31
Value6000.0-210000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Effect
Period End2020-09-302019-12-312019-09-30
Value88000.0-47000.0144000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value500000.0400000.0400000.0400000.0400000.0200000.0200000.0100000.0100000.0100000.0100000.0100000.0100000.0100000.030000.030000.0
Percentage of EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings

bl:ContingentConsideration


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-782000.07702000.0176000.0-72000.0-221000.0145000.0-267000.0129000.0193000.0-9000.0163000.097000.078000.0112000.0261000.0178000.096000.093000.0-649000.0135000.081000.062000.0-80000.013000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:BusinessAcquisition

us-gaap:FinitelivedIntangibleAssetsAcquired1

bl:RimiliaHoldingsLtd


Finitelived
Period End2020-10-02
Value34
Percentage of FinitelivedIntangibleAssetsAcquired1100.0

us-gaap:FinitelivedIntangibleAssetsAcquired1 us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

bl:RimiliaHoldingsLtd, us-gaap:CustomerRelatedIntangibleAssets


Finitelived
Period End2020-10-02
Value12
Percentage of FinitelivedIntangibleAssetsAcquired136.8

bl:RimiliaHoldingsLtd, us-gaap:TechnologyBasedIntangibleAssets


Finitelived
Period End2020-10-02
Value21
Percentage of FinitelivedIntangibleAssetsAcquired163.2

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-110000.0-333000.0-52000.0237000.0864000.0-826000.073000.0-137000.0127000.0-128000.0-86000.069000.0-462000.059000.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value435000.0-2075000.04107000.06668000.02314000.0-10014000.04342000.05498000.02189000.0-6240000.04475000.01073000.06804000.0-7935000.02061000.02141000.0387000.0-2469000.01978000.04621000.0-704000.0-2031000.02195000.0
Percentage of IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value132.33323-1.7256.079-1.29818-0.152113.869100.7756.5926.558125.339
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value5.8813.4566.762.2782.2391.1676.7822.0115.1372.4994.4581.5632.1691.285-0.0660.340.0460.0220.0510.18-0.7870.7570.351
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-2600000.0672000.02168000.0627000.01017000.01499000.01905000.0-528000.0-812000.0-1789000.0-1943000.0-232000.0733000.01891000.0-1054000.0-133000.0-850000.01163000.02159000.0-127000.046000.01017000.0617000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeOther

us-gaap:InterestIncomeOther


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value87000.094000.0360000.0648000.01085000.02409000.02538000.02161000.0734000.0695000.0662000.0578000.0507000.0389000.0320000.0281000.0244000.0224000.00004000.0
Percentage of InterestIncomeOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0

us-gaap:MarketableSecuritiesRealizedGainLoss

us-gaap:MarketableSecuritiesRealizedGainLoss


Marketable
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0100000.00000000000000
Percentage of MarketableSecuritiesRealizedGainLoss0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestChangeInRedemptionValue

us-gaap:MinorityInterestChangeInRedemptionValue


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-154000.0-5937000.04619000.0-1319000.0719000.02201000.0940000.0839000.054000.0
Percentage of MinorityInterestChangeInRedemptionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-284000.0-197000.0-268000.0-425000.0-328000.0-328000.0-466000.0-9242000.0-5225000.0-250000.0-62000.0-4460000.0-8457000.0
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2066000.01343000.01138000.01253000.01299000.01358000.01340000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value3000.0-105000.045000.044000.021000.0-22000.05000.0108000.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:GeneralAndAdministrativeExpense


Other
Period End2021-06-302021-03-312020-06-30
Value100000.0800000.0-200000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value-51000.0-81000.0-192000.0-375000.0877000.0-311000.0-38000.0116000.0254000.0137000.025000.016000.0-70000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value-51000.0-81000.0-192000.0-375000.0877000.0-311000.0-38000.0116000.0254000.0137000.025000.016000.0-70000.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2020-09-30
Value-300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-54000.024000.0-237000.0-419000.0856000.0-311000.0-13000.0-23000.0142000.094000.03000.025000.016000.0-70000.0-31000.041000.0-34000.02000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4802000.05134000.02058000.01272000.01294000.03562000.0568000.0784000.0859000.01729000.031000.0112000.03197000.016000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

bl:RimiliaHoldingsLtd


Payments
Period End2020-10-02
Value120
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

bl:RimiliaHoldingsLtd, us-gaap:SubsequentEvent


Payments
Period End2020-10-02
Value120
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4243081490.00.0116472233929183636302426
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToDevelopSoftware

us-gaap:PaymentsToDevelopSoftware


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value3.5424.0212.742.8442.7052.2891.3091.1521.3671.2321.0351.5271.461.6531.2791.3620.91.0830.9440.8540.6650.8070.767
Percentage of PaymentsToDevelopSoftware100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromConvertibleDebt

us-gaap:ProceedsFromConvertibleDebt


Proceeds
Period End2021-06-302021-03-312019-12-31
Value-0.31211290.0
Percentage of ProceedsFromConvertibleDebt100.0100.00.0

us-gaap:ProceedsFromConvertibleDebt us-gaap:DebtInstrument

bl:ConvertibleSeniorNotesDue2026


Proceeds
Period End2021-03-102021-03-31
Value1150432
Percentage of ProceedsFromConvertibleDebt38.30.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2091756436135289542043311929332828
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value270.013120.00.0
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.00.0100.0100.00.00.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value2.8992.1516.3513.8715.764.6562.23.8061.8012.7640.4847.4552.6123.4531.582.9115.6960.0650.6641.8940.1670.1350.081
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockPlans

us-gaap:ProceedsFromStockPlans


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-30
Value3364000.002743000.00
Percentage of ProceedsFromStockPlans100.00.0100.00.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-18000.0-8000.0-41000.0233000.071000.069000.0084000.048000.025000.0-65000.024000.08000.0-51000.0-37000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfConvertibleDebt

us-gaap:RepaymentsOfConvertibleDebt


Repayments
Period End2021-06-302021-03-31
Value0.0432
Percentage of RepaymentsOfConvertibleDebt0.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value518000.0152000.00130000.01139000.01019000.037000.0
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.00.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value65000.045000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value246000.0296000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod


Share
Period End2021-06-302021-03-312020-12-31
Value2000.032000.024000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross


Share
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-07-212016-12-31
Value24000.0208000.0023000.000407000.073000.0117000.0157000.0219000.0740520.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

bl:CompensationCommittee, us-gaap:RestrictedStockUnitsRSU, us-gaap:SubsequentEvent


Sharebased
Period End2021-02-172019-11-05
Value25.00.25
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage100.0100.0

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock


Stock
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value64000.075000.0085000.077000.0074000.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.0100.00.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value203000.0258000.0107000.0104000.0129000.0217000.067000.077000.084000.0178000.0002000.0
Percentage of StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312016-12-31
Value103000.099000.0248000.071135.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value5197000.03364000.003608000.02743000.002552000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.00.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value5196000.03363000.003607000.02742000.002551000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.00.0100.0100.00.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value1000.01000.001000.01000.001000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan0.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2000.02000.01000.01000.01000.02000.01000.01000.01000.02000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2000.02000.01000.01000.01000.02000.01000.01000.01000.02000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TemporaryEquityForeignCurrencyTranslationAdjustments

us-gaap:TemporaryEquityForeignCurrencyTranslationAdjustments


Temporary
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value3000.0-105000.045000.044000.021000.0-22000.05000.0108000.0
Percentage of TemporaryEquityForeignCurrencyTranslationAdjustments100.0100.0100.0100.0100.0100.0100.0100.0

bl:AccruedExpensesAndOtherLiabilitiesCurrent

bl:AccruedExpensesAndOtherLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value333335292220302520182420191220181615181715
Percentage of AccruedExpensesAndOtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities us-gaap:BusinessAcquisition

bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value1885000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherCurrentLiabilities100.0

bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiability us-gaap:BusinessAcquisition

bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiability

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value2100000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiability100.0

bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets us-gaap:BusinessAcquisition

bl:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value329000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets100.0

bl:DebtInstrumentFaceAmountOptional us-gaap:DebtInstrument

bl:DebtInstrumentFaceAmountOptional

bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-03-10
Value150
Percentage of DebtInstrumentFaceAmountOptional100.0

bl:DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo

bl:DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo


Debt
Period End2021-06-30
Value4029000.0
Percentage of DebtSecuritiesAvailableForSaleAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo100.0

bl:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo

bl:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo


Debt
Period End2021-06-30
Value4029000.0
Percentage of DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughYearTwo100.0

bl:DeferredTaxAssetsOperatingLeases

bl:DeferredTaxAssetsOperatingLeases


Deferred
Period End2020-12-312019-12-31
Value2297000.03263000.0
Percentage of DeferredTaxAssetsOperatingLeases100.0100.0

bl:DeferredTaxLiabilitiesRightOfUseAsset

bl:DeferredTaxLiabilitiesRightOfUseAsset


Deferred
Period End2020-12-312019-12-31
Value1674000.02559000.0
Percentage of DeferredTaxLiabilitiesRightOfUseAsset100.0100.0

bl:MarketableSecuritiesContinuousLossPositionForLessThan12MonthsEstimatedFairValue

bl:MarketableSecuritiesContinuousLossPositionForLessThan12MonthsEstimatedFairValue


Marketable
Period End2020-09-302020-06-302019-12-31
Value171283
Percentage of MarketableSecuritiesContinuousLossPositionForLessThan12MonthsEstimatedFairValue100.0100.0100.0

bl:NetOperatingLossCarryforwardsRecapturedDueToChangeInTaxStatusUtilized us-gaap:IncomeTaxAuthority

bl:NetOperatingLossCarryforwardsRecapturedDueToChangeInTaxStatusUtilized

us-gaap:DomesticCountry


Net
Period End2020-12-31
Value70
Percentage of NetOperatingLossCarryforwardsRecapturedDueToChangeInTaxStatusUtilized100.0

us-gaap:StateAndLocalJurisdiction


Net
Period End2020-12-31
Value37
Percentage of NetOperatingLossCarryforwardsRecapturedDueToChangeInTaxStatusUtilized53.4

bl:PrepaymentToAcquireBusiness

bl:PrepaymentToAcquireBusiness


Prepayment
Period End2020-09-30
Value121
Percentage of PrepaymentToAcquireBusiness100.0

bl:PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets

bl:PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets


Property
Period End2020-12-312019-12-312018-12-31
Value212513
Percentage of PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets100.0100.0100.0

bl:PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets us-gaap:StatementGeographical

country:US


Property
Period End2020-12-312019-12-312018-12-31
Value172012
Percentage of PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets80.281.591.7

us-gaap:NonUs


Property
Period End2020-12-312019-12-312018-12-31
Value4.3474.7251.129
Percentage of PropertyPlantAndEquipmentNetAndOperatingLeaseRightOfUseAssets19.818.58.3

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value3558000.03280000.03737000.04983000.06741000.04775000.0237000.046000.0695000.0223000.0168000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value6954894483674843864225871545752424442374041481415
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value39925112126194105355258606064616063585353
Percentage of AssetsFairValueDisclosure57.55.630.826.150.424.960.173.2107.3104.7115.3153.4138.4140.7170.1143.6127.3109.7

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value10944894734806105805279312311311811310610510210198951021415
Percentage of AssetsFairValueDisclosure157.5100.0105.6130.8126.1150.4124.9160.1173.2207.3204.7215.3253.4238.4240.7270.1243.6227.3209.7100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302017-09-302017-03-31
Value3000.0261000.0677000.0319000.0130000.0124000.0151000.026000.02000.01000.02000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Available
Period End2020-09-302019-12-31
Value255000.063000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax97.748.5

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302019-12-31
Value23000.03000.06000.067000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.0100.02.351.5

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

us-gaap:USTreasurySecurities


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-09-30
Value3000.081000.0260000.067000.052000.047000.03000.01000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.012.081.551.541.931.111.5100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value31000.08000.024000.021000.0519000.019000.05000.021000.089000.094000.0117000.0133000.063000.033000.073000.041000.041000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Available
Period End2021-06-30
Value21000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax67.7

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-312020-09-302019-12-31
Value10000.08000.024000.018000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax32.3100.0100.094.7

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:InvestmentType

us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value8000.021000.0519000.018000.01000.09000.060000.046000.067000.097000.043000.012000.027000.018000.021000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.094.720.042.967.448.957.372.968.336.437.043.951.2

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value524175117154303487688185868686838185837783
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Available
Period End2021-06-302020-12-312020-09-302019-12-31
Value3592.5992.58828
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis68.51.52.25.8

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-312020-09-302019-12-31
Value152211077
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.912.993.915.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1493081494.504382
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis28.60.085.63.878.4

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:InvestmentType

us-gaap:CommercialPaper


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.5995.1713028141423282734282527141015
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.53.410.05.821.618.227.933.131.739.634.130.732.016.913.318.7

us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2212013977203735323330333228312525
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis12.978.246.115.829.745.541.337.038.635.139.839.833.638.132.730.7

us-gaap:USTreasurySecurities


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value14928132382332926252521212121252929
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis85.618.543.978.448.736.330.829.929.725.326.126.325.230.438.135.8

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate


Available
Period End2021-06-30
Value524
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis


Available
Period End2021-06-30
Value524
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302020-09-302017-03-312016-12-31
Value5201176149
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302020-09-302017-03-312016-12-31
Value5201176149
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value5243081751171543024876881858686868381858377830.00.0
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent us-gaap:FinancialInstrument

us-gaap:CommercialPaper


Available
Period End2021-06-302020-12-312020-09-302019-12-31
Value3592.5992.58828
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent68.51.52.25.8

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302020-12-312020-09-302019-12-31
Value152211077
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent2.912.994.015.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1493081494.51382
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent28.6100.085.63.878.4

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent us-gaap:InvestmentType

us-gaap:CommercialPaper


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.5995.1713028141423282734282527141015
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent1.53.310.05.821.518.127.933.131.739.734.230.732.016.913.318.7

us-gaap:CorporateDebtSecurities


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2212113977203735313330333228312525
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent12.978.246.015.829.845.641.337.038.635.139.739.833.638.132.730.7

us-gaap:USTreasurySecurities


Available
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value14928133382332926252521212121252929
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent85.618.544.078.448.736.330.829.929.725.226.126.325.230.438.235.8

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiability

bl:BlackLineSystemsInc


Business
Period End2021-06-302021-03-312020-12-312019-12-31
Value6.66.56.46.4
Percentage of BusinessCombinationContingentConsiderationLiability100.0100.0100.0100.0

bl:RimiliaHoldingsLtd


Business
Period End2021-06-302021-03-312020-12-312020-10-02
Value23241717
Percentage of BusinessCombinationContingentConsiderationLiability360.6380.0267.20.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

bl:RimiliaHoldingsLtd, us-gaap:SubsequentEvent


Business
Period End2020-10-02
Value30
Percentage of BusinessCombinationContingentConsiderationLiability0.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value3031236.2146.2866.5076.3626.6296.56.3076.3166.1536.0565.9785.8665.6055.4275.3315.2385.1454.867
Percentage of BusinessCombinationContingentConsiderationLiability460.8479.9367.00.00.00.099.40.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BusinessCombinationContingentConsiderationLiability us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value3031236.2146.2866.5076.3626.6296.56.3076.3166.1536.0565.9785.8665.6055.4275.3315.2385.1454.867
Percentage of BusinessCombinationContingentConsiderationLiability460.8479.9367.00.00.00.099.40.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value11137.9382.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.0082.008
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1817154.2064.2784.4994.3544.6214.4924.2994.3084.1454.0483.973.8583.5973.4193.3233.233.1372.859
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value329000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value1901000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value1873000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value2232000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value533000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value2357000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value34
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value180000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

bl:RimiliaHoldingsLtd


Business
Period End2020-10-02
Value138
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value19149.55.62.91.2
Percentage of CapitalizedComputerSoftwareAccumulatedAmortization100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareNet

us-gaap:CapitalizedComputerSoftwareNet


Capitalized
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-31
Value3278000.02372000.02002000.01565000.01465000.01237000.0
Percentage of CapitalizedComputerSoftwareNet100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers

us-gaap:CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value201715131211109.4249.2528.9699.0238.9258.3087.5576.8246.1295.3755.0494.5914.1132.967
Percentage of CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:MoneyMarketFunds, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value362456212392541283227202221151512181415
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:MoneyMarketFunds, us-gaap:FairValueMeasurementsRecurring


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value362456212392541283227202221151512181415
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds


Cash
Period End2021-06-302021-03-312020-12-312019-12-31
Value4951229839
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.00.0100.0

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


Cash
Period End2021-06-302021-03-312020-12-31
Value4957199
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Cash
Period End2021-06-30
Value24
Percentage of CashAndCashEquivalentsFairValueDisclosure0.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Cash
Period End2021-06-30
Value24
Percentage of CashAndCashEquivalentsFairValueDisclosure0.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds


Cash
Period End2021-06-302021-03-312020-12-312019-12-31
Value4951229839
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.00.0100.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Cash
Period End2021-06-302021-03-312020-12-31
Value4957199
Percentage of CashAndCashEquivalentsFairValueDisclosure0.00.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-31
Value40847131112052863494638293131252215
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:AwardType, us-gaap:PlanName

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

bl:StockOptionsAndRestrictedStockUnits, bl:TwoThousandSixteenEquityIncentivePlan


Common
Period End2020-12-312019-12-312018-12-31
Value12109.1
Percentage of CommonStockCapitalSharesReservedForFutureIssuance100.0100.0100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:SubsidiarySaleOfStock

us-gaap:EmployeeStock


Common
Period End2020-12-312019-12-312018-12-31
Value1.21.31.5
Percentage of CommonStockCapitalSharesReservedForFutureIssuance9.812.016.5

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value327000.0116000.075000.072000.093000.0128000.0163000.0222000.0174000.0196000.0277000.0317000.0382000.0468000.0
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleDebtFairValueDisclosures us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:ConvertibleDebtFairValueDisclosures

bl:ConvertibleSeniorNotesDue2026, us-gaap:FairValueInputsLevel2


Convertible
Period End2021-06-302021-03-31
Value11001130
Percentage of ConvertibleDebtFairValueDisclosures100.0100.0

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour, us-gaap:FairValueInputsLevel2


Convertible
Period End2021-06-302021-03-312020-12-31
Value404397941
Percentage of ConvertibleDebtFairValueDisclosures36.835.20.0

us-gaap:ConvertibleDebtFairValueDisclosures us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Convertible
Period End2020-09-30
Value692
Percentage of ConvertibleDebtFairValueDisclosures0.0

us-gaap:ConvertibleDebtNoncurrent

us-gaap:ConvertibleDebtNoncurrent


Convertible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value10811066407401395389384
Percentage of ConvertibleDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

us-gaap:DebtInstrumentCarryingAmount

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value250250500500500
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent us-gaap:DebtInstrument

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value5555111111111
Percentage of DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateEffectivePercentage

bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-03-10
Value6.04
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0

us-gaap:DebtInstrumentUnamortizedDiscount us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscount

bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-03-10
Value276
Percentage of DebtInstrumentUnamortizedDiscount100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

bl:ConvertibleSeniorNotesDue2026


Debt
Period End2021-06-302021-03-31
Value277290
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0

bl:ZeroPointOneTwoFivePercentConvertibleSeniorNotesDueTwentyTwentyFour


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value40439298115
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet14.615.00.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months


Debt
Period End2021-06-302020-12-312019-12-31
Value2841283
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value514917142324
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredPolicyAcquisitionCosts


Deferred
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6758545350494341373430282625
Percentage of DeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value827562423019
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value524943292113
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value368000.0358000.01963000.02052000.01253000.0358000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value16128.4875.1972.9131.962
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value7915000.07155000.06321000.03961000.04393000.02488000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value3037000.02974000.02910000.01462000.01065000.01147000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts


Deferred
Period End2021-06-302021-03-31
Value3100000.05200000.0
Percentage of DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts100.0100.0

us-gaap:DeferredTaxLiabilitiesFinancingArrangements

us-gaap:DeferredTaxLiabilitiesFinancingArrangements


Deferred
Period End2020-12-312019-12-31
Value2025
Percentage of DeferredTaxLiabilitiesFinancingArrangements100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value126.048.735112021
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-31
Value751000.054000.0-2000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value15158.41.5131.8591.225
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0

us-gaap:DueFromRelatedPartiesCurrent

us-gaap:DueFromRelatedPartiesCurrent


Due
Period End2020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value702000.0789000.0833000.061000.0789000.02609000.05219000.09080000.08750000.07873000.07945000.0
Percentage of DueFromRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value211921201412201714121710117.49411108.3387.402119.0169.716
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2020-12-312019-12-312018-12-31
Value996544
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:SubsidiarySaleOfStock

us-gaap:EmployeeStock


Employee
Period End2020-12-312019-12-312018-12-31
Value3.12.31.6
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions3.13.53.6

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeStockOption


Employee
Period End2020-12-312017-12-312016-12-31
Value242015
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

bl:ContingentConsideration


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value3031236.2146.2866.5076.3626.6296.56.3076.3166.1536.0565.9785.8665.6055.4275.3315.2385.1455.014.9294.8674.8654.8524.8265.607
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value807262544028
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value28231915118.136
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization34.932.131.228.928.828.8

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value403934272014
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization50.353.955.151.050.850.8

us-gaap:PatentedTechnology


Finite
Period End2020-12-31
Value0.236
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.3

us-gaap:TradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value11108.5286.935.3613.727
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization14.613.913.612.813.213.2

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value10
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value2680000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value5555000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value7622000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value8154000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1279090949485
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value443131313127
Percentage of FiniteLivedIntangibleAssetsGross35.035.235.233.533.532.8

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value644242424236
Percentage of FiniteLivedIntangibleAssetsGross50.647.147.144.944.943.3

us-gaap:PatentedTechnology


Finite
Period End2020-12-31
Value2.333
Percentage of FiniteLivedIntangibleAssetsGross1.8

us-gaap:TradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value151515151515
Percentage of FiniteLivedIntangibleAssetsGross12.617.717.716.816.818.8

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:InvestmentsFairValueDisclosure

us-gaap:CommercialPaper, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.5885.1713028141423282734282527141015
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CorporateDebtSecurities, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value11012113977203735313330333228312525
Percentage of InvestmentsFairValueDisclosure4263.32341.9459.2274.0138.2251.4147.9111.8121.688.4116.2129.3105.0225.6245.4164.0

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


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value4.5128133382332926252521212121252929
Percentage of InvestmentsFairValueDisclosure174.3553.2439.01359.4225.9200.0110.290.393.663.676.585.678.7179.9286.0191.1

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency

us-gaap:CommercialPaper, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value2.5885.1713028141423282734282527141015
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CorporateDebtSecurities, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value11012113977203735313330333228312525
Percentage of InvestmentsFairValueDisclosure4263.32341.9459.2274.0138.2251.4147.9111.8121.688.4116.2129.3105.0225.6245.4164.0

us-gaap:USTreasurySecurities, us-gaap:FairValueMeasurementsRecurring


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value4.5128133382332926252521212121252929
Percentage of InvestmentsFairValueDisclosure174.3553.2439.01359.4225.9200.0110.290.393.663.676.585.678.7179.9286.0191.1

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

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


Investments
Period End2021-06-302021-03-312020-12-312019-12-31
Value149308149382
Percentage of InvestmentsFairValueDisclosure0.00.00.01359.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Investments
Period End2021-06-302020-12-312019-12-31
Value3592.59928
Percentage of InvestmentsFairValueDisclosure0.00.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Investments
Period End2021-06-302020-12-312019-12-31
Value152277
Percentage of InvestmentsFairValueDisclosure0.00.0274.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Investments
Period End2021-06-302020-12-312019-12-31
Value3592.59928
Percentage of InvestmentsFairValueDisclosure0.00.0100.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Investments
Period End2021-06-302020-12-312019-12-31
Value152277
Percentage of InvestmentsFairValueDisclosure0.00.0274.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Investments
Period End2021-06-302021-03-312020-12-312019-12-31
Value149308149382
Percentage of InvestmentsFairValueDisclosure0.00.00.01359.4

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-312019-12-312018-12-31
Value4644000.05674000.07059000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value3031236.2146.2866.5076.3626.6296.56.3076.3166.1536.0565.9785.8665.6055.42717161010
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value3031236.2146.2866.5076.3626.6296.56.3076.3166.1536.0565.9785.8665.6055.42717161010
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value5.06.0
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value18819917212294
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value9899946090
Percentage of OperatingLossCarryforwards52.050.254.549.396.0

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent


Other
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3963000.03744000.01524000.01428000.01798000.01687000.02690000.02674000.01824000.02419000.01783000.01788000.01727000.01482000.0
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPrepaidExpenseCurrent

us-gaap:OtherPrepaidExpenseCurrent


Other
Period End2020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value15151110109.6328.8236.8997.6537.5525.611
Percentage of OtherPrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2020-12-31
Value10
Percentage of PurchaseObligation100.0

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount


Redeemable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1818128.1287.196.7784.9054.4534.1184.1754.387
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalents us-gaap:IncomeStatementLocation

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:PrepaidExpensesAndOtherCurrentAssets


Restricted
Period End2020-12-312019-12-31
Value500000.0300000.0
Percentage of RestrictedCashAndCashEquivalents100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-06-302018-03-312017-12-31
Value208000.0208000.0227000.019000.018000.019000.020000.019000.019000.0200000.0200000.0400000.0
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value265000.0261000.0273000.0261000.0250000.0244000.0250000.0243000.0253000.0269000.0274000.0278000.0260000.0274000.0400000.0400000.0400000.0400000.0400000.0
Percentage of RestrictedCashAndCashEquivalentsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value525484468411
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:RevenueRemainingPerformanceObligationPercentage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value59.059.058.059.0
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber


Share
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2072000.02176000.01458000.01654000.01692000.01745000.01230000.01300000.01202000.01089000.0960000.02000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1874000.02107000.02072000.02089000.01654000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber0.00.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value56.2946.0542.2934.12
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

bl:CompensationCommittee, us-gaap:RestrictedStockUnitsRSU, us-gaap:SubsequentEvent


Share
Period End2021-02-172019-11-05
Value100000.067000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber


Share
Period End2020-12-31
Value1682000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2020-12-31
Value24.31
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value28985759510337
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested

us-gaap:RestrictedStockUnitsRSU


Sharebased
Period End2020-12-31
Value276
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority

us-gaap:TaxCreditCarryforwardAmount

us-gaap:ForeignCountry


Tax
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2800000.02200000.02000000.01200000.0600000.0
Percentage of TaxCreditCarryforwardAmount100.0100.0100.0100.0100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:DomesticCountry, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7800000.04800000.03300000.02200000.01100000.0
Percentage of TaxCreditCarryforwardAmount278.6218.2165.0183.3183.3

us-gaap:StateAndLocalJurisdiction, bl:EnterpriseZone


Tax
Period End2020-12-31
Value600000.0
Percentage of TaxCreditCarryforwardAmount21.4

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6300000.05000000.03500000.02600000.01800000.0
Percentage of TaxCreditCarryforwardAmount225.0227.3175.0216.7300.0

Line plots across dimensions of each concept


us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
(None,)
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amountus-gaap: Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities
COGS Ratio
us-gaap:ProductOrService
(None,)
C O G S  Ratious-gaap: Product Or Service
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
Allocated Share Based Compensation Expenseus-gaap: Income Statement Location
us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService
(None,)
Cost Of Goods And Services Soldus-gaap: Product Or Service
us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents
(None,)
Net Income Lossus-gaap: Statement Equity Components
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Geographical
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:LongTermDebt
us-gaap:DebtInstrument
(None,)
Long Term Debtus-gaap: Debt Instrument
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents
(None,)
Net Income Lossus-gaap: Statement Equity Components