STRA


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

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaid
us-gaap:CreditFacility
us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:Revenues

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:TaxesPayableCurrent

us-gaap:LongTermDebtNoncurrent

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:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation
us-gaap:IncomeStatementLocation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:UnrecognizedTaxBenefits

stra:BenefitRedeemed
us-gaap:BusinessAcquisition
stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentEstimateOfWorkingCapital
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition
stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetCash
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition
stra:FundsReceivedFromInvestor

stra:ImpairmentOfRightOfUseAssets

stra:PaymentsforProceedsfromofShareBasedCompensationNet

stra:RevenueDeferred

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:BusinessCombinationIntegrationRelatedCosts
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLoss

us-gaap:DepreciationAndAmortization

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:EquityMethodInvestmentDividendsOrDistributions
us-gaap:FairValueByLiabilityClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
us-gaap:FairValueByLiabilityClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements

us-gaap:FairValueOfAssetsAcquired

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:GoodwillPurchaseAccountingAdjustments
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:GoodwillTransfers

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:OperatingLeaseImpairmentLoss

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherNonoperatingIncome

us-gaap:OtherRestructuringCosts
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:PaymentsForRestructuring
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

us-gaap:PaymentsOfStockIssuanceCosts

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

us-gaap:PaymentsToAcquireLimitedPartnershipInterests
us-gaap:StatementScenario

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:RestructuringCharges
us-gaap:RestructuringPlan

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense

stra:AccruedLicensingFee

stra:AccruedStudentObligations
us-gaap:BusinessAcquisition
stra:BusinessAcquisitionAgreementValue
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedCurrentLiabilitiesLeaseObligation
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedNoncurrentLiabilitiesLeaseObligation
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesContractWithCustomerLiability
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesTaxesPayable
us-gaap:BusinessAcquisition
stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset
us-gaap:BusinessAcquisition, us-gaap:ValuationTechnique
stra:ContractLiabilitiesFairValuePercentageOfCarryingValue

stra:DeferredAcquisitionPaymentsNonCurrent

stra:DeferredPaymentArrangementValue
us-gaap:BalanceSheetLocation
stra:DeferredPaymentsCurrent

stra:DeferredTaxAssetsDeferredGainOnSaleOfPropertyNonCurrent

stra:DeferredTaxAssetsDeferredLeasingCostsNonCurrent

stra:DeferredTaxLiabilityDeferredRightOfUseLeaseAssets

stra:EstimatedGraduationFundToBeRedeemedNextTwelveMonths
us-gaap:BalanceSheetLocation
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
stra:FiniteLivedIntangibleAssetMeasurementInput

stra:GraduationFundLiability
us-gaap:ProductOrService
us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
stra:IndefiniteLivedIntangibleAssetMeasurementInput
us-gaap:Range, us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

stra:LesseeOperatingLeaseLeaseNotyetCommencedAmount
us-gaap:BusinessAcquisition
stra:LicenseAgreementCommitmentForPrepaidExpenses
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:Range, us-gaap:BusinessAcquisition
stra:NumberOfStudents
us-gaap:BusinessAcquisition, us-gaap:MeasurementInputType, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:ValuationTechnique
stra:PropertyPlantAndEquipmentMeasurementInput
us-gaap:Range, us-gaap:BusinessAcquisition, us-gaap:MeasurementInputType, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:ValuationTechnique

stra:RealEstateLiabilities

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

us-gaap:AccountsPayableTradeCurrentAndNoncurrent

us-gaap:AccountsReceivableGrossCurrent
us-gaap:BalanceSheetLocation
us-gaap:AccountsReceivableNetNoncurrent

us-gaap:AccruedEmployeeBenefitsCurrentAndNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetRetirementObligationsNoncurrent
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FinancialInstrument

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

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:ValuationTechnique
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:Range
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestments
us-gaap:FairValueByLiabilityClass
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:IncomeTaxesReceivable

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility
us-gaap:LineOfCredit
us-gaap:Currency, us-gaap:CreditFacility
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherAssetsMiscellaneousNoncurrent
us-gaap:StatementScenario
us-gaap:OtherCommitment

us-gaap:OtherLiabilities

us-gaap:OtherLongTermInvestments

us-gaap:OtherSundryLiabilitiesNoncurrent

us-gaap:PrepaidExpenseNoncurrent
us-gaap:BusinessAcquisition

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:RestructuringReserve
us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan
us-gaap:BalanceSheetLocation
us-gaap:RestructuringReserveCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Other Liabilities
Current Liabilities
Taxes Payable Current
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Common Stock Value
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ████▇▇▇▇▇▇▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁0.2460.2470.2440.2440.2220.2220.220.220.2190.2190.2170.2170.1130.1130.1120.1120.1120.1120.1110.1110.1120.1120.110.110.110.110.1090.1090.1090.1080.1080.1090.1090.108NA0.1140.1190.1190.1190.1180.120.120.1240.133NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█24.12624.153NA23.21422.01222.071NA22.12922.10922.05NA17.79911.3811.311NA11.2111.1911.121NA10.82810.79910.782NA10.73610.70510.738NA10.66310.62310.581NA10.55210.53510.85NANA11.4870.01148311.477NA11.64711.73712.794NA13.55713.70413.729
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁23.97523.974NA23.00421.76421.81NA21.80621.77721.499NA17.79910.87910.745NA10.70110.6810.63NA10.61610.6110.596NA10.59310.58710.579NA10.57110.56510.529NA10.5110.50210.813NANA11.4330.0114311.419NA11.62311.69212.744NA13.46713.56313.596
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount █▁0.3850.118NA0.1230.00.003NA0.0030.00.059NA0.0006810.00.0NA0.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▆▅▅▅▆▇▆▆▆▅▆▁▅▆▄▅▆▆▆▅▅▆▆▅▆▆▆▅▆▆▂▅▆▇▇▆▅▇▇▇▆███▇██0.830.40.250.481.571.621.310.771.120.531.05-2.970.480.88-0.610.580.961.01.10.270.731.171.230.351.121.081.220.471.291.4-1.80.31.431.591.591.470.361.862.12.311.22.542.812.741.732.632.68
us-gaap:EarningsPerShareDiluted ▆▅▅▅▆▇▆▆▆▅▆▁▅▆▄▅▆▆▆▅▅▆▆▅▆▆▆▅▆▆▂▅▆▇▇▆▅▇▇▇▆███▇██0.830.40.250.471.551.61.290.751.10.521.02-2.970.460.84-0.610.560.920.951.070.270.721.151.210.351.111.061.210.461.291.4-1.80.31.421.591.591.470.361.852.092.31.22.532.82.731.722.62.65
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Operating Margin us-gaap:StatementBusinessSegments stra:AlternativeLearningSegment█▁12.90612.524NANA8.4819.789NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments stra:CapellaSegmentNANANA110.615117.751119.648117.902110.549112.171114.698111.12643.792NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments stra:StrayerSegmentNANANA128.411138.08145.654142.226127.837128.911128.058127.46114.471113.903115.271117.453107.321NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments stra:USHigherEducationSegment▁█212.207226.547NANA247.35255.513NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _▆▅▅▅▇▇▇▆▆▆▆▁▅▅▅▅▅▆▆▅▅▆▆▅▆▆▆▅▆▆▃▅▆▆▆▆▅▇▇▇▆▇██26.712.03.60815.42246.39543.95937.21320.027.59625.72318.875-57.1274.18411.32811.6888.22413.85418.44319.6544.8312.89620.09221.6567.25420.92919.85922.6249.21623.99825.909-30.0966.62126.25729.91929.91928.7257.83636.16840.85845.36924.40550.14559.22558.905NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▅▅█▅▇▇▆▆▆▅▆▁▅▅▄▅10.7350.76154.03711.06134.55835.25928.32316.6924.59211.73422.509-52.8035.1889.467-6.4956.227NANA11.7182.8787.78612.4213.0413.86811.84611.1812.8475.20413.50714.858-18.912.84415.88517.37NA16.4364.11621.30623.94826.913.74129.00235.79135.62823.35135.65736.359
us-gaap:CostsAndExpenses ██▇▆▅▆▆▆▆▆▆▆▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▂▂▂272.473278.336263.886223.604209.436221.343226.559221.747217.514220.785223.228218.072110.484105.141107.019100.28898.86696.46999.62597.32695.59191.07492.00491.88888.82192.02693.44691.5488.74990.559154.179103.41105.723107.587NA113.208116.424110.086108.674NANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense █▇▇▆▆▆▆▆▆▆▆▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▁▁▁93.39586.84584.63574.06967.30169.22667.59572.30368.37464.13968.54115.81111.06311.21819.3811.19313.20511.61912.52210.95211.9310.32910.8310.92510.84411.65511.63711.02811.15711.01329.09911.47212.97811.088NA10.71113.76912.92812.64812.95613.40614.5814.52259.713.38513.80914.691
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▆▅▆██▇▆▇▇▆▁▅▆▆▅▆▆▆▅▆▆▆▅▆▆▆▅▆▆▃▅▆▇27.45714.1673.50716.33448.03446.08239.7123.24331.72129.0520.63-56.0174.63111.61711.8698.36513.94718.46519.6284.78412.84820.03221.5566.15419.75718.66421.3937.94722.71924.557-31.495.23124.9228.623NANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▆▅▃▅▇▆▆▅▅█▃▃▄▄█▄▅▆▆▄▅▆▆▄▆▅▆▅▆▆▁▄▆▆7.4814.59-2.415.37413.88210.84311.1736.5517.31217.55-1.825-3.236-0.5572.1518.3642.1383.6457.8877.911.9065.0627.6128.5152.4317.8837.2798.452.9949.0429.774-12.5332.0829.91811.392NA10.8552.67913.84915.66217.4869.26619.35723.36923.42815.23923.28123.791
us-gaap:IncomeTaxesPaid ▆▁▅▆▆▁▅▄█▁▂▂▃▁▂▃▆▁▃▃▅▂▃▃▅▁16.60.413.016.215.50.712.211.924.00.72.54.26.60.14.45.616.00.26.66.814.53.77.57.413.40.2NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestPaidNet us-gaap:CreditFacility us-gaap:RevolvingCreditFacility▄▄0.70.7NANA0.20.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▇▆▆▆██▇▆▇▆▇▁▆▆▅▆▆▆▆▅▆▆▆▅▆▆▆▆▆▆▄▅▆▆▆▆▅▇▇▇▆▇██▇██19.9769.5775.91710.9634.15235.23928.53716.69224.40911.522.455-52.7815.1889.467-6.4956.22710.30210.57811.7182.8787.78612.4213.0413.72311.87411.38512.9434.95313.67714.783-18.9573.14915.00217.23117.23116.6274.10321.21223.98926.67113.93529.64735.79135.88323.34135.65736.379
us-gaap:OperatingCostsAndExpenses ███▆▆▆▇▆▆▇▆▄▁▁▁▁▁▁152.938152.805147.007127.174125.544132.936133.323132.527130.704134.05130.71293.2964.6963.77665.11859.75563.6561.416NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▆▅▅▅▇▇▇▆▆▆▆▁▅▅▅▅▅▆▆▅▅▆▆▅▆▆▆▅▆▆▃▅▆▆▆▆▅▇▇▇▆▇██▇██26.712.03.60815.42246.39543.95937.21320.027.59625.72318.875-57.1274.18411.32811.6888.22413.85418.44319.6544.8312.89620.09221.6567.25420.92919.85922.6249.21623.99825.909-30.0966.62126.25729.91929.91928.7257.83636.16840.85845.36924.40550.14559.22558.90538.24958.69159.926
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▁█-9.276-8.712NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▁█-9.276-8.712NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss NANANA10.9634.15235.23928.53716.69224.40911.522.455-52.7815.1889.467-6.4956.22710.30210.57811.7182.878NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ██▇▆▆▇▇▆▆▆▆▃▂▂▂▁▁▂▂▁▁▁▂▁▁▁▂▁▁▂▂▁▂▂▂▂▂▃▃▃▂▃▄▄▃▃▃299.173290.336267.494239.026255.831265.302263.772241.747245.11246.508242.103160.945114.668116.469118.707108.512112.72114.912119.279102.156108.487111.166113.6699.142109.75111.885116.07100.756112.747116.468124.083110.031131.98137.506137.506141.933124.26146.254149.532155.824135.865163.789171.956171.951147.597159.283157.901
us-gaap:Revenues ██▇▆▆▇▇▆▆▆▆▃▂▂▂▁▁▂▂▁▁▁▂▁▁▁▂▁▁▂▂▁▂▂▂▂▂▃▃▃▂▃▄▄▃▃▃299.173290.336267.494239.026255.831265.302263.772241.747245.11246.508242.103160.945114.668116.469118.707108.512112.72114.912119.279102.156108.487111.166113.6699.142109.75111.885116.07100.756112.747116.468124.083110.031131.98137.506137.506141.933124.26146.254149.532155.824135.865163.789171.956171.951147.597159.283157.901
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ███▇▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2363.3132369.4422295.8072047.3191791.5641783.8211789.4081781.1961784.571775.391661.0291645.696336.765331.81321.278328.575318.482313.974298.696286.504277.551277.696248.434230.273336.003327.778307.815295.484282.193277.614254.266240.951229.822216.027NA227.792231.614220.143224.234231.133224.205217.354237.617412.767NANANA
us-gaap:Liabilities ██▇▄▄▄▄▄▄▄▃▃▁▁▁▁▁▁▁▁▁▁▁▁▂▃▂▃▂▃▂▂▂▂630.133633.517547.488342.261307.014324.674326.698336.537346.694351.952235.805237.366112.925113.518112.081113.086109.281115.448110.322113.285109.613119.579105.578103.096215.347221.415215.083217.766212.23223.447215.364183.986178.867183.704NA186.804166.621150.896168.208188.84180.455178.987164.314236.763NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2363.3132369.4422295.8072047.3191791.5641783.8211789.4081781.1961784.571775.391661.0291645.696336.765331.81321.278328.575318.482313.974298.696286.504277.551277.696248.434230.273336.003327.778307.815295.484282.193277.614254.266240.951229.822216.027NA227.792231.614220.143224.234231.133224.205217.354237.617412.767NANANA
us-gaap:StockholdersEquity ████▇▇▇▇▇▇▇▇▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁1733.181735.9251748.3191705.0581484.551459.1471462.711444.6591437.8761423.4381425.2241408.33223.84218.292209.197215.489209.201198.526188.374173.219167.938158.117142.856127.177120.656106.36392.73277.71869.96354.16738.90256.96550.95532.323NA40.98864.99369.24756.02642.29343.7538.36773.303176.004192.979227.161205.8
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▄▄▃█▆▅▅▅▅▅▄▄▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▁▁▁▁393.635352.928286.122806.375553.496532.783524.094505.613490.321456.589420.361391.41214.172201.422190.348186.76180.051177.4160.543152.702145.781144.494138.798119.726225.299217.583196.651182.68166.483157.776127.34118.316102.25984.995NA89.65591.93784.9389.38994.66891.05683.791108.22286.324NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▃▂█▅▅▅▅▄▄▄▃▂▂▂▂▂▂▂▂▂▂▂▁▃▂▂▂▂▂▁▁▁▁261.585238.29187.509717.804470.319442.845419.693397.094375.515352.387311.732276.382171.6165.867155.933150.483147.867147.099129.245120.502117.422117.498106.88986.917195.557188.279162.283150.471136.076126.294.7685.2267.5450.762NA47.51745.60948.6952.70457.13757.07150.55871.09464.10784.12288.0191.266
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▂▂█▅▅▄▄▄▄▃▃▂▁▁▁▁▁▁273.914252.039202.02718.651471.619444.195420.497397.596376.017352.892312.237276.897172.1166.375156.448150.992148.382147.599129.758NANANA107.389NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▆▅▄▄▄▅▅▅▅▅▅▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂78.60963.46950.16945.95841.00441.33551.52350.96447.3450.84255.69452.52725.59524.99723.12220.62620.34220.32320.53218.92519.05318.61318.51917.06415.22214.96216.94215.71215.00915.48115.84219.68623.33622.181NA23.26224.10924.21823.3225.00621.222.34925.711199.6NANANA
us-gaap:OtherAssetsCurrent ██▇▄▃▄▃▃▃▃▂▃▂▁▂▂▁▁▁▁▁▁▂▂▂▂▃▃▂▂▃▂▂▂43.644.71439.45822.15619.06721.76118.00417.1317.6616.87415.81417.36711.38510.55811.29312.91710.3579.97810.76610.8388.4098.38313.3915.74514.5214.34217.42616.49715.39816.09516.73812.50311.38312.052NA14.42214.25511.88613.36512.13112.78510.88411.41510.231NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA385.783NANANA306.11NANANA300.511NANANA244.064NANANA230.255NANANA219.734NANANA220.227NANANA225.492NANANANA217.955NANANA206.191NANANA190.593NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType stra:FurnitureAndOfficeEquipmentNANA77.337NANANA73.457NANANA76.856NANANA76.726NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovementsNANA21.373NANANA21.143NANANA20.883NANANA19.304NANANA19.238NANANA19.109NANANA18.998NANANA19.105NANANANA18.188NANANA17.995NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA15.684NANANA10.173NANANA13.546NANANA10.97NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA15.517NANANA7.808NANANA8.354NANANA5.103NANANA7.006NANANA4.251NANANA1.942NANANA0.79NANANANA0.67NANANA0.843NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA65.719NANANA49.241NANANA44.215NANANA42.906NANANA39.769NANANA38.639NANANA38.732NANANA39.299NANANANA38.362NANANA33.692NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA183.015NANANA137.15NANANA129.519NANANA80.662NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA226.929NANANA189.081NANANA177.834NANANA170.301NANANA157.131NANANA142.595NANANA137.961NANANA131.071NANANANA96.435NANANA85.042NANANA74.53NANANA
us-gaap:AmortizationOfIntangibleAssets ██▇▇▇▇▇▇▇▇▇▅▁▁19.39219.40717.97415.41715.41715.41715.41615.41715.41715.41715.41610.2780.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▇██▄▄▄▄▄▅▅▅▅▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▃▄▄▄153.812164.277158.854115.607117.247117.284117.029116.489118.462119.04122.677124.61372.12573.68673.76374.33572.70672.80373.12471.72572.57774.95477.13978.58980.33680.80482.26684.40387.09790.52894.421109.958114.198117.912NA121.52122.62118.836119.542121.149121.898120.774118.957116.063NANANA
us-gaap:Goodwill ███▅▅▅▅▅▅▅▅▅▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1303.8631311.4871318.526732.075732.075732.075732.075732.075732.104732.799732.54730.72917.91920.74420.74420.74420.74420.74420.74420.79320.79321.0426.86.86.86.86.86.86.86.86.86.86.86.8NA6.86.86.86.86.8NANANANANANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNames▁▅█257.38258.34259.262NANANA185.4185.4185.4185.4185.4185.7NANA7.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▅▆▇▁▂▃▄▄▅▆▇█289.985308.19326.42231.511245.344259.178273.011286.844300.678314.511328.344342.477NANA7.26NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA67.158NANANA87.611NANANA142.944NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass stra:StudentRelationships▁▄█32.60549.8567.158NANANA87.611101.444115.278129.111142.944156.777NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇█▅▁▁▁▁▂▃▃134.069142.998120.68780.71981.41882.34584.77893.20897.484101.533NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██▇▇▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁59.88760.28254.92850.36930.06723.56621.78820.43519.78419.05219.42923.1439.69812.15511.97112.12712.5412.90813.18913.3913.89114.2765.6945.6875.4715.5785.8576.3926.9387.528.5765.8726.5656.32NA6.5384.6424.8695.1155.193.3393.612.1721.506NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent ▇▆▇█▄▅▆▆▆▅▆▅▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▁▁100.11997.448104.742115.82967.25881.85990.82886.09286.06680.08585.97978.09246.65745.80646.17750.51441.28638.39841.13244.81842.12738.10842.25344.45940.73342.90543.83647.71333.17438.50338.52739.05831.61731.082NA39.12440.36225.75736.51734.039NANANA41.792NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▇▄▃▂▂▂▃▂▂▂▂▁▁▁118.771108.07360.50142.63340.05240.49539.28445.57140.91940.82638.73338.02522.54723.93121.851NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ██▆▆▅▅▅▅▅▅▄▄▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁252.189249.757200.052195.295148.884160.888156.748157.83153.819153.517125.131116.11769.20472.27869.06672.29861.30366.23159.83961.65459.5462.48857.59157.53560.47463.55856.33558.76149.25655.57445.15843.04935.96139.417NA43.02471.80659.19983.8977.18482.88964.54171.166224.119NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▄▇█▁▁▁▁29.28432.88634.80924.7424.85224.80625.284NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:TaxesPayableCurrent ▁█4.01511.35NA12.09316.72213.7281.3520.00.06.1440.419NANA2.5411.038NANA8.5981.883NANA7.2312.6841.0544.2368.5391.2861.047.74110.9372.569NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebtNoncurrent ▁▆█141.748141.798141.823NANANANANANANANANANANANANANANANANANANANANA109.375110.938112.5114.063115.625117.188118.75NANANANA121.875NANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▃▃▅▁▂▃▄▅▇█▆42.8144.26453.40734.01240.10744.58147.94257.01666.32370.29859.358NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ███▆▇▇▁▁▁▁▁45.00444.71746.05536.15240.56540.441.7641.9931.9771.4171.263NANANANANANANANANANANANANANANANANANANA51.456NANANANA21.905NANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ██▄▁▁▁▁148.382152.981106.15176.80277.45878.76580.557NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA27.683NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA22.548NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA19.512NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA15.011NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA34.898NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ████▇▇▇▇▇▇▇▇▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁1733.181735.9251748.3191705.0581484.551459.1471462.711444.6591437.8761423.4381425.2241408.33223.84218.292209.197215.489209.201198.526188.374173.219167.938158.117142.856127.177120.656106.36392.73277.71869.96354.16738.90256.96550.95532.323NA40.98864.99369.24756.02642.29343.7538.36773.303176.004192.979227.161205.8
us-gaap:CommonStockValue ████▇▇▇▇▇▇▆▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁0.2460.2470.2440.2440.2220.2220.220.220.2190.2190.2170.2170.1130.1130.1120.1120.1120.1120.1110.1110.1120.1120.110.110.110.110.1090.1090.1090.1080.1080.1090.1090.108NA0.1140.1190.1190.1190.1180.120.120.1240.133NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ████▇▇▇▇▇▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1523.0221521.1451519.5491515.6621291.5971287.4061309.4381306.3531305.1481304.171306.6531301.22853.01549.76647.07944.02141.10637.87935.45332.01629.61227.57724.73822.119.44717.014.5512.3839.8327.5447.1376.2893.1230.377NA0.2999.2345.7311.9440.2956.0592.4380.01.206NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▇▇▇██▇▆▆▅▅▅▄▇▇▇▇▇▇▆▆▆▅▅▄▄▄▃▂▂▂▁▂▂▁179.089174.469179.646188.392192.072171.266152.819137.639132.06118.783118.322106.907170.712168.413162.006171.356167.983160.535152.81141.092138.214130.428118.008104.967101.24489.3777.98565.04260.08946.41231.62950.58647.43732.435NA41.31156.18563.95554.61542.49138.41136.45473.179174.625NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▇█▁▁▁▁▁▁▁▁30.82340.06448.880.760.6590.2530.2330.4470.4490.2660.032NANANANANANANANANANANANANA-0.145-0.1170.0880.184-0.0670.1030.028-0.0190.286-0.597NA-0.736-0.545-0.558-0.652-0.611-0.84-0.6450.00.04NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues NANA0.0220.248NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANA0.0220.226NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents us-gaap:CommonStockNANA0.00.022NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▆▆▆▆▆▅▅▅▅▄▆█▅▄▅▄▅▄▅▄▃▄▄▄▄▄▄▄▄▃▁▅▄▃4.1683.93.8513.8753.8593.0253.0863.0213.1552.8543.9595.0983.2492.6883.0582.9153.2272.4273.4372.4042.0352.8912.6372.6532.4722.4512.3952.5512.5461.9610.8933.1662.9822.25NA-3.8943.5283.442.393.4363.473.4362.8923.0032.8873.0383.059
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆█▃▆▆▇▇▆▆▇▇▁▄▄▄▄▄▅▄▄▄▄▅▄▄▅▄▄▄▅▄▅▅▅47.0578.781-15.88146.84543.24668.69560.73938.34444.40558.65861.514-44.67312.97717.04911.78311.6088.22924.53514.4037.6827.74514.6823.07710.36513.06430.39215.43716.91611.9833.21711.93220.58320.18531.393NA24.81614.5856.17936.48231.61435.31620.26167.17221.37553.59224.74763.107
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▁▇▇▇▆▇▇▇▆█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-7.013-10.792-627.642-5.398-2.818-6.334-24.51-4.074-7.013-2.469-16.551155.284-4.363-4.233-3.478-6.138-4.594-3.841-5.66-3.649-7.821-3.666-3.105-2.53-4.223-2.834-2.844-1.739-1.323-0.996-1.611-2.121-2.626-2.368NA-6.568-8.294-5.821-4.05-12.104-6.825-6.6781.00214.2162.94-10.669-12.361
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▆█▃▃▃▃▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▁▃▃▄▄▄▄▄▄▄▃-17.632-17.104125.269205.585-13.004-38.663-13.328-12.691-14.267-15.534-9.623-5.814-2.889-2.889-2.855-2.854-2.854-2.8530.0-0.9530.0-0.4050.0-116.475-1.563-1.562-0.781-0.782-0.781-0.781-0.781-0.782-0.781-25.78NA-16.34-9.372-4.372-36.865-19.444-21.978-34.119-61.187-55.606-60.42-17.334-23.438
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▆▁█▆▆▆▆▆▆▆▇▆▆▆▆▆▆21.87550.019-516.631247.03227.42423.69822.90121.57923.12540.65535.34104.7975.7259.9275.4562.610.78317.841NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AmortizationOfFinancingCosts ▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▂▂▂▂▂▂▂▂▂▂0.1380.1380.2160.0830.0840.0830.0830.0830.0840.0830.0830.0780.0650.0660.0650.0660.0650.0660.0650.0660.0650.0660.0660.7730.1950.1950.1950.1950.1950.1950.1950.1950.1950.195NA0.1960.20.1990.20.20.1990.1990.065NANANANA
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▂▄▃▃▄▂▂▄█▁▄▅▄█▄▄▅▄▄▄▄▄▄-1.601-8.898-0.564-6.131-4.628-2.108-9.008-8.938-0.92510.834-11.879-2.8620.261-1.84210.157-2.168-2.3220.762-3.154-3.385-1.525-0.633-0.587-1.737NANANANANANANANANANANA1.511-1.296NANA3.1121.197-1.0740.8183.827-1.134-1.6-0.74
us-gaap:IncreaseDecreaseInAccountsReceivable ██▁▆▅▄▅▆▅▄▅▃▅▅▆▅▅▅▅▅▅▅▅▅▅▅▅▆▅▅▅▄▅▅15.5313.417-20.8835.044-0.267-3.5530.4883.519-0.93-4.8470.347-11.1430.6672.2492.7960.3170.156-0.0191.878-0.180.472-0.7171.5561.9890.36-1.914-2.4983.832-0.681-1.338-0.448-3.651.155-1.081NA-0.847-0.1090.898-1.6863.806-1.149-3.3623.730.9792.194-1.6282.913
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆█▃▆▆▇▇▆▆▇▇▁▄▄▄▄▄▅▄▄▄▄▅▄▄▅▄▄▄▅▄▅▅▅47.0578.781-15.88146.84543.24668.69560.73938.34444.40558.65861.514-44.67312.97717.04911.78311.6088.22924.53514.4037.6827.74514.6823.07710.36513.06430.39215.43716.91611.9833.21711.93220.58320.18531.393NA24.81614.5856.17936.48231.61435.31620.26167.17221.37553.59224.74763.107
us-gaap:NetIncomeLoss ▇▆▆▆██▇▆▇▆▇▁▆▆▅▆▆▆▆▅▆▆▆▅▆▆▆▆▆▆▄▅▆▆▆▆▅▇▇▇▆▇██▇██19.9769.5775.91710.9634.15235.23928.53716.69224.40911.522.455-52.7815.1889.467-6.4956.22710.30210.57811.7182.8787.78612.4213.0413.72311.87411.38512.9434.95313.67714.783-18.9573.14915.00217.23117.23116.6274.10321.21223.98926.67113.93529.64735.79135.88323.34135.65736.379
us-gaap:ProfitLoss NANANA10.9634.15235.23928.53716.69224.40911.522.455-52.7815.1889.467-6.4956.22710.30210.57811.7182.878NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ▆▅▅▅▅▄▄▃▅▄▅█▄▄▄▄▄▃▅▃▃▄▃▃▃▃▃▃▃▃▁▄▄▃4.1683.93.8513.8753.8593.0253.0852.4993.5663.013.7515.8443.252.6883.0582.9143.2282.4273.4372.4042.0362.8912.6372.6532.4722.4512.3952.5512.5461.9610.8933.1662.9822.25NA-3.8943.5273.442.393.4363.473.4352.8923.0032.8873.0383.059
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▁▇▇▇▆▇▇▇▆█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-7.013-10.792-627.642-5.398-2.818-6.334-24.51-4.074-7.013-2.469-16.551155.284-4.363-4.233-3.478-6.138-4.594-3.841-5.66-3.649-7.821-3.666-3.105-2.53-4.223-2.834-2.844-1.739-1.323-0.996-1.611-2.121-2.626-2.368NA-6.568-8.294-5.821-4.05-12.104-6.825-6.6781.00214.2162.94-10.669-12.361
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▇▇▅▆█▆▅▆▅▇▄▃▃▂▄▃▃▃▂▁▂▂▂▃▂▂▁▁▁▁▂▂▂10.48812.6512.0259.32211.20714.25810.928.9110.1038.75611.5197.4324.3634.2333.4786.1384.5943.8415.663.6491.8212.0313.1052.534.2232.8342.8441.7391.3230.9961.6112.1212.6262.368NA6.5688.2945.8214.055.1046.8256.67811.38413.9489.4210.47712.17
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▆█▃▃▃▃▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▁▃▃▄▄▄▄▄▄▄▃-17.632-17.104125.269205.585-13.004-38.663-13.328-12.691-14.267-15.534-9.623-5.814-2.889-2.889-2.855-2.854-2.854-2.8530.0-0.9530.0-0.4050.0-116.475-1.563-1.562-0.781-0.782-0.781-0.781-0.781-0.782-0.781-25.78NA-16.34-9.372-4.372-36.865-19.444-21.978-34.119-61.187-55.606-60.42-17.334-23.438
us-gaap:PaymentsOfDividendsCommonStock ████▇▇▇▆▆▆▆▆▁▁▁▁▁▁14.77114.77814.65114.64313.33513.32713.32811.10311.10311.09111.0411.0242.8892.8892.8552.8542.8542.853NANANANANANANANANANANANANANANANANA11.71911.87211.87211.86511.94411.97812.00913.17413.31710.32710.42710.47
us-gaap:PaymentsForRepurchaseOfCommonStock NANA0.00.00.00.247NANA0.00.0NANANANANANANANANANANANANANANANANANANANA0.00.00.024.999NANANANANA20.00.055.427127.23742.28951.2257.00215.001
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value246000.0247000.0244000.0244000.0222000.0222000.0220000.0220000.0219000.0219000.0217000.0217000.0113000.0113000.0112000.0112000.0112000.0112000.0111000.0111000.0112000.0112000.0110000.0110000.0110000.0110000.0109000.0109000.0109000.0108000.0108000.0109000.0109000.0108000.0114000.0119000.0119000.0119000.0118000.0120000.0120000.0124000.0133000.0140000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2424232222222222171111111111101010101010101010101010110.01148311111112131313
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value2323232121212121171010101010101010101010101010101010110.0114311111112131313
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value385000.0118000.0123000.003000.03000.0059000.0681.000000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.00.0100.0100.00.0100.0100.00.00.00.00.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.830.40.250.481.571.621.310.771.120.531.05-2.970.480.88-0.610.580.961.01.10.270.731.171.230.351.121.081.220.471.291.4-1.80.31.431.591.591.470.361.862.12.311.22.542.812.741.732.632.68
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.830.40.250.471.551.61.290.751.10.521.02-2.970.460.84-0.610.560.920.951.070.270.721.151.210.351.111.061.210.461.291.4-1.80.31.421.591.591.470.361.852.092.31.22.532.82.731.722.62.65
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value100.761541134352816241122-52.8035.1889.467-6.4956.227112.8787.78612133.8681111125.2041314-18.912.8441517164.11621232613293535233536
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.60.320.24.613.513.310.76.910.04.89.3-32.84.58.1-5.55.79.82.87.211.211.53.910.810.011.15.212.012.8-15.22.612.012.611.63.314.616.017.310.117.720.820.715.822.423.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2722782632232092212262212172202232181101051071009896999795919291889293918890154103105107113116110108
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax91.195.998.793.581.983.485.991.788.789.692.2135.596.490.390.292.487.784.083.595.388.181.980.992.780.982.380.590.978.777.8124.394.080.178.279.893.775.372.7

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value93868474676967726864681511111911131112101110101010111111111129111211101312121213141459131314
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.229.931.631.026.326.125.629.927.926.028.39.89.69.616.310.311.710.110.510.711.09.39.511.09.910.410.010.99.99.523.510.49.88.17.511.18.88.58.39.98.98.434.79.18.79.3

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value27143.5071648463923312920-56.0174.63111118.3651318194.7841220216.1541918217.9472224-31.495.2312428
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.24.91.36.818.817.415.19.612.911.88.5-34.84.010.010.07.712.416.116.54.711.818.019.06.218.016.718.47.920.221.1-25.44.818.920.8

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.4814.59-2.415.3741310116.5517.31217-1.825-3.236-0.5572.15182.1383.6457.8877.911.9065.0627.6128.5152.4317.8837.2798.452.9949.0429.774-12.5332.0829.91811102.6791315179.266192323152323
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.51.6-0.92.25.44.14.22.73.07.1-0.8-2.0-0.51.815.52.03.26.96.61.94.76.87.52.57.26.57.33.08.08.4-10.11.97.58.37.62.29.510.511.26.811.813.613.610.314.615.1

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value160.41316150.71211240.72.54.26.60.14.45.6160.26.66.8143.77.57.4130.2
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.50.14.96.86.10.34.64.99.80.31.02.65.80.13.75.214.20.25.56.713.43.36.67.512.20.2

Interest Paid Net

us-gaap:InterestPaidNet us-gaap:CreditFacility

us-gaap:InterestPaidNet

us-gaap:RevolvingCreditFacility


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value700000.0700000.0200000.0100000.0
Percentage of InterestPaidNet100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RevolvingCreditFacility0.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value199.5775.9171034352816241122-52.7815.1889.467-6.4956.2271010112.8787.78612133.7231111124.9531314-18.9573.149151717164.10321232613293535233536
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.73.32.24.613.313.310.86.910.04.79.3-32.84.58.1-5.55.79.19.29.82.87.211.211.53.810.810.211.24.912.112.7-15.32.911.412.512.511.73.314.516.017.110.318.120.820.915.822.423.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value199.5775.9171034352816241122-52.7815.1889.467-6.4956.2271010112.8787.78612133.7231111124.9531314-18.9573.1491517164.10221232613293535233536
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.73.32.24.613.313.310.86.910.04.79.3-32.84.58.1-5.55.79.19.29.82.87.211.211.53.810.810.211.24.912.112.7-15.32.911.412.511.73.314.516.017.110.318.120.820.915.822.423.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingCostsAndExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value15215214712712513213313213013413093646365596361
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax51.152.655.053.249.150.150.554.853.354.454.058.056.454.854.955.156.553.4

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value26123.6081546433720272518-57.1274.18411118.2241318194.831220217.2542019229.2162325-30.0966.621262929287.83636404524505958385859
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.94.11.36.518.116.614.18.311.310.47.8-35.53.69.79.87.612.316.016.54.711.918.119.17.319.117.719.59.121.322.2-24.36.019.921.821.820.26.324.727.329.118.030.634.434.325.936.838.0

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

stra:AlternativeLearningSegment


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value5.185.8814.2216.397
Percentage of OperatingIncomeLoss19.449.09.114.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.01.62.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:AlternativeLearningSegment40.147.049.865.3

stra:AustraliaNewZealandSegment


Operating
Period End2021-06-302021-03-31
Value15-2.949
Percentage of OperatingIncomeLoss58.4-24.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.2-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:AustraliaNewZealandSegment21.1-5.8

stra:CapellaSegment


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1427262518212420-14.3260.00.0
Percentage of OperatingIncomeLoss97.158.660.467.493.276.593.9109.525.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.310.610.09.57.78.69.88.5-8.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:CapellaSegment13.523.122.20.016.918.821.10.0-32.70.00.0

stra:StrayerSegment


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2235363718242423111417218.069
Percentage of OperatingIncomeLoss147.977.283.3101.793.489.297.1127.0-20.8342.3158.8185.998.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.514.013.814.47.710.010.19.97.412.515.418.37.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:StrayerSegment17.825.925.10.014.619.119.50.010.412.615.60.07.5

stra:USHigherEducationSegment


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value32475856
Percentage of OperatingIncomeLoss120.1397.9126.7129.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.716.423.021.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:USHigherEducationSegment15.121.123.822.2

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-31
Value-9.276-8.712
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.1-3.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-31
Value-9.276-8.712
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.1-3.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1034352816241122-52.7815.1889.467-6.4956.2271010112.878
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.613.313.310.86.910.04.79.3-32.84.58.1-5.55.79.19.29.82.8

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29929026723925526526324124524624216011411611810811211411910210811111399109111116100112116124110131137137141124146149155135163171171147159157
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

stra:TuitionGrantsAndScholarship, stra:AustraliaNewZealandSegment


Revenue
Period End2021-06-302021-03-31
Value7250
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.217.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.217.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:TuitionGrantsAndScholarship stra:AustraliaNewZealandSegment100.0100.0

stra:TuitionGrantsAndScholarship, stra:CapellaSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value105112114113105107109106400.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.244.043.042.943.743.744.443.925.30.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.244.043.042.943.743.744.443.925.30.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:TuitionGrantsAndScholarship stra:CapellaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

stra:TuitionGrantsAndScholarship, stra:StrayerSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value124133140137123124123123107109110113103
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.052.253.052.251.050.850.150.867.095.795.395.495.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.052.253.052.251.050.850.150.867.095.795.395.495.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:TuitionGrantsAndScholarship stra:StrayerSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:TuitionGrantsAndScholarship, stra:USHigherEducationSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value203217237245
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.074.992.992.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax68.074.992.992.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:TuitionGrantsAndScholarship stra:USHigherEducationSegment100.0100.0100.0100.0

us-gaap:ServiceOther, stra:AustraliaNewZealandSegment


Revenue
Period End2021-06-302021-03-31
Value1.721.043
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ServiceOther stra:AustraliaNewZealandSegment100.0100.0

us-gaap:ServiceOther, stra:CapellaSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.055.2685.4624.8744.9265.1055.234.7373.0430.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.12.11.82.02.12.12.01.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.12.11.82.02.12.12.01.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ServiceOther stra:CapellaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ServiceOther, stra:StrayerSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4.0674.5365.1574.6684.5784.5094.5434.4276.6674.1594.3114.1733.868
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.81.91.81.91.81.81.84.13.63.73.53.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.81.91.81.91.81.81.84.13.63.73.53.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ServiceOther stra:StrayerSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ServiceOther, stra:USHigherEducationSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value8.7749.079.65410
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.93.13.83.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.93.13.83.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ServiceOther stra:USHigherEducationSegment100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

stra:AlternativeLearningSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value12128.4819.789
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.33.33.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.33.33.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:AlternativeLearningSegment100.0100.0100.0100.0

stra:AustraliaNewZealandSegment


Revenue
Period End2021-06-302021-03-31
Value7451
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.817.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.817.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:AustraliaNewZealandSegment100.0100.0

stra:CapellaSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value110117119117110112114111430.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.346.045.144.745.745.846.545.927.20.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax46.346.045.144.745.745.846.545.927.20.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:CapellaSegment100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

stra:StrayerSegment


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value128138145142127128128127114113115117107
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.754.054.953.952.952.651.952.671.199.399.098.998.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.754.054.953.952.952.651.952.671.199.399.098.998.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:StrayerSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:USHigherEducationSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value212226247255
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.978.096.796.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.978.096.796.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax stra:USHigherEducationSegment100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29929026723925526526324124524624216011411611810811211411910210811111399109111116100112116124110131137137141124146149155135163171171147159157
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value236323692295204717911783178917811784177516611645336331321328318313298286277277248230336327307295282277254240229216227231220224231224217237412385
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value630633547342307324326336346351235237112113112113109115110113109119105103215221215217212223215183178183186166150168188180178164236195
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.726.723.816.717.118.218.318.919.419.814.214.433.534.234.934.434.336.836.939.539.543.142.544.864.167.669.973.775.280.584.776.477.885.082.071.968.575.081.780.582.369.257.450.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value236323692295204717911783178917811784177516611645336331321328318313298286277277248230336327307295282277254240229216227231220224231224217237412385
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value17331735174817051484145914621444143714231425140822321820921520919818817316715814212712010692776954385650324064695642433873176192227205189176188
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets73.373.376.283.382.981.881.781.180.680.285.885.666.565.865.165.665.763.263.160.560.556.957.555.235.932.430.126.324.819.515.323.622.215.018.028.131.525.018.319.517.730.842.60.00.00.049.20.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value3040480.760.6590.2530.2330.4470.4490.2660.032-0.0220.00.00.0-0.145-0.1170.0880.184-0.0670.1030.028-0.0190.286-0.597-0.736-0.545-0.558-0.652-0.611-0.84-0.6450.00.040.2950.2850.2850.305-0.0790.181
Percentage of StockholdersEquity1.82.32.80.00.00.00.00.00.00.00.0-0.00.00.00.0-0.1-0.10.10.2-0.10.20.1-0.00.6-1.8-1.8-0.8-0.8-1.2-1.4-1.9-1.70.00.00.20.10.10.2-0.00.1
Percentage of Assets1.31.72.10.00.00.00.00.00.00.00.0-0.00.00.00.0-0.0-0.00.00.1-0.00.00.0-0.00.1-0.3-0.3-0.2-0.3-0.3-0.3-0.4-0.30.00.00.00.00.00.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-302010-03-312009-12-312008-12-312007-12-31
Value152315211519151512911287130913061305130413061301534947444137353229272422191714129.8327.5447.1376.2893.1230.3770.2999.2345.7311.9440.2956.0592.4380.01.2060.7011.6261.1571787
Percentage of StockholdersEquity87.987.686.988.987.088.289.590.490.891.691.792.423.722.822.520.419.619.118.818.517.617.417.317.416.116.015.715.914.113.918.311.06.11.20.714.28.33.50.713.86.40.00.70.30.80.69.846.2
Percentage of Assets64.464.266.274.072.172.273.273.373.173.578.779.115.715.014.713.412.912.111.911.210.79.910.09.65.85.24.74.23.52.72.82.61.40.20.14.02.60.90.12.71.10.00.30.00.00.30.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value0.2460.2470.2440.2440.2220.2220.220.220.2190.2190.2170.2170.1130.1130.1120.1120.1120.1120.1110.1110.1120.1120.110.110.110.110.1090.1090.1090.1080.1080.1090.1090.1080.1140.1190.1190.1190.1180.120.120.1240.1330.1360.1390.1390.140.1410.144
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.30.20.20.30.30.20.20.20.30.30.30.20.10.10.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1791741791881921711521371321181181061701681621711671601521411381301181041018977656046315047324156635442383673174192226203188158101
Percentage of StockholdersEquity10.310.110.311.012.911.710.49.59.28.38.37.676.377.277.479.580.380.981.181.582.382.582.682.583.984.084.183.785.985.781.388.893.1100.3100.886.492.497.5100.587.895.099.899.299.899.599.099.290.253.6
Percentage of Assets7.67.47.89.210.79.68.57.77.46.77.16.550.750.850.452.252.751.151.249.249.847.047.545.630.127.325.322.021.316.712.421.020.615.018.124.329.124.418.417.116.830.842.30.00.00.048.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3933522868065535325245054904564203912142011901861801771601521451441381192252171961821661571271181028489918489949183108286289
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.714.912.539.430.929.929.328.427.525.725.323.863.660.759.256.856.556.553.753.352.552.055.952.067.166.463.961.859.056.850.149.144.539.339.439.738.639.941.040.638.645.569.475.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2612381877174704424193973753523112761711651551501471471291201171171068619518816215013612694856750474548525757507164848891635695
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.110.18.235.126.324.823.522.321.019.818.816.851.050.048.545.846.446.943.342.142.342.343.037.758.257.452.750.948.245.537.335.429.423.520.919.722.123.524.725.523.329.915.50.00.00.016.60.00.0

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

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


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1.8834.9412.841105.876393041369.4411.7913.2710.113
Percentage of CashAndCashEquivalentsAtCarryingValue0.72.11.51.41.28.97.310.59.72.70.61.20.1
Percentage of Assets0.10.20.10.50.32.21.72.32.00.50.10.20.0
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:MoneyMarketFunds0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1.8834.9412.841105.876393041369.4411.7913.2710.113
Percentage of CashAndCashEquivalentsAtCarryingValue0.72.11.51.41.28.97.310.59.72.70.61.20.1
Percentage of Assets0.10.20.10.50.32.21.72.32.00.50.10.20.0
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:MoneyMarketFunds0.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value273252202718471444420397376352312276172166156150148147129107
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.610.68.835.126.324.923.522.321.119.918.816.851.150.148.746.046.647.043.443.2

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value786350454141515047505552252423202020201819181817151416151515151923222324242325212225199165
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.32.72.22.22.32.32.92.92.72.93.43.27.67.57.26.36.46.56.96.66.96.77.57.44.54.65.55.35.35.66.28.210.210.310.210.411.010.410.89.510.310.848.442.8

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value43443922192118171716151711101112109.97810108.4098.3831315141417161516161211121414111312121011108.317
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.91.71.11.11.21.01.01.01.01.01.13.43.23.53.93.33.23.63.83.03.05.46.84.34.45.75.65.55.86.65.25.05.66.36.25.46.05.25.75.04.82.52.2

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value385306300244230219220225217206190
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.817.118.176.077.188.471.588.795.789.246.2

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

stra:FurnitureAndOfficeEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-31
Value77737676
Percentage of PropertyPlantAndEquipmentGross20.024.025.631.4
Percentage of Assets3.44.14.623.9
Percentage of Assets stra:FurnitureAndOfficeEquipment0.00.00.00.0

us-gaap:BuildingAndBuildingImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value21212019191918191817
Percentage of PropertyPlantAndEquipmentGross5.56.96.97.98.48.78.68.58.38.7
Percentage of Assets0.91.21.36.06.47.76.27.58.07.8
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-31
Value15101310
Percentage of PropertyPlantAndEquipmentGross4.13.34.54.5
Percentage of Assets0.70.60.83.4
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value157.8088.3545.1037.0064.2511.9420.790.670.843
Percentage of PropertyPlantAndEquipmentGross4.02.62.82.13.01.90.90.40.30.4
Percentage of Assets0.70.40.51.62.31.70.60.30.30.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value65494442393838393833
Percentage of PropertyPlantAndEquipmentGross17.016.114.717.617.317.617.617.417.616.3
Percentage of Assets2.92.82.713.413.315.612.615.516.814.6
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312018-12-312017-12-31
Value18313712980
Percentage of PropertyPlantAndEquipmentGross47.444.843.133.0
Percentage of Assets8.07.77.825.1
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value226189177170157142137131968574
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.910.610.753.052.657.444.851.542.336.818.1

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1919171515151515151515100.00.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:FiniteLivedIntangibleAssetsByMajorClass

stra:StudentRelationships


Amortization
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1616131313131313139.2
Percentage of AmortizationOfIntangibleAssets87.187.190.289.589.589.589.589.590.289.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets stra:StudentRelationships0.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1531641581151171171171161181191221247273737472727371727477788080828487909410911411712112211811912112112011811684
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.56.96.95.66.56.66.56.56.66.77.47.621.422.223.022.622.823.224.525.026.127.031.134.123.924.726.728.630.932.637.145.649.754.653.352.954.053.352.454.455.650.128.121.9

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2020-12-312019-12-31
Value188201
Percentage of PropertyPlantAndEquipmentNet118.6172.4
Percentage of Assets8.211.3
Percentage of Assets country:US0.00.0

us-gaap:NonUs


Property
Period End2020-12-31
Value91
Percentage of PropertyPlantAndEquipmentNet57.4
Percentage of Assets4.0
Percentage of Assets us-gaap:NonUs0.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value130313111318732732732732732732732732730172020202020202020216.86.86.86.86.86.86.86.86.86.86.86.86.86.86.86.86.8
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets55.255.457.435.840.941.040.941.141.041.344.144.45.36.36.56.36.56.66.97.37.57.62.73.02.02.12.22.32.42.42.72.83.03.13.02.93.13.02.9

us-gaap:Goodwill us-gaap:BusinessAcquisition

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Goodwillus-gaap:
Period End2020-11-03
Value546
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

stra:AustraliaAndNewZealand


Goodwillus-gaap:
Period End2020-12-31
Value586
Percentage of Goodwill44.5
Percentage of Assets25.5
Percentage of Assets stra:AustraliaAndNewZealand0.0

stra:AustraliaNewZealandSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-31
Value571579586
Percentage of Goodwill43.944.244.5
Percentage of Assets24.224.525.5
Percentage of Assets stra:AustraliaNewZealandSegment0.00.00.0

stra:CapellaUniversity


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-31
Value394394395
Percentage of Goodwill29.953.953.9
Percentage of Assets17.222.123.8
Percentage of Assets stra:CapellaUniversity0.00.00.0

stra:USHigherEducationSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-31
Value632632732
Percentage of Goodwill48.548.255.5
Percentage of Assets26.726.731.9
Percentage of Assets stra:USHigherEducationSegment0.00.00.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:TradeNames


Indefinite
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2572582591851851851851851857.3
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.910.911.310.410.410.410.411.211.32.3
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2893083262312452592732863003143283427.26
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.313.014.211.313.714.515.316.116.817.719.820.82.3

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-31
Value6787142
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0
Percentage of Assets2.94.98.6

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

stra:StudentRelationships


Finite
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value324967871011151291421560.0
Percentage of FiniteLivedIntangibleAssetsNet0.00.0100.0100.00.00.00.0100.00.00.0
Percentage of Assets1.42.12.94.95.76.57.38.69.50.0
Percentage of Assets stra:StudentRelationships0.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value134142120808182849397101
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.76.05.33.94.54.64.75.25.55.7

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5960545030232120191919239.6981211121212131313145.6945.6875.4715.5785.8576.3926.9387.528.5765.8726.5656.326.5384.6424.8695.1155.193.3393.612.1721.5061.339
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.52.42.51.71.31.21.11.11.11.21.42.93.73.73.73.94.14.44.75.05.12.32.51.61.71.92.22.52.73.42.42.92.92.92.02.22.32.21.51.70.90.40.3

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value10097104115678190868680857846454650413841444238424440424347333838393131394025363441
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.24.14.65.73.84.65.14.84.84.55.24.713.913.814.415.413.012.213.815.615.213.717.019.312.113.114.216.111.813.915.216.213.814.417.217.411.716.314.710.1

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11810860424040394540403838222321
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.04.62.62.12.22.32.22.62.32.32.32.36.77.26.8

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value252249200195148160156157153153125116697269726166596159625757606356584955454335394371598377826471224184
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.710.58.79.58.39.08.88.98.68.67.57.120.521.821.522.019.221.120.021.521.522.523.225.018.019.418.319.917.520.017.817.915.618.218.931.026.937.433.437.029.729.954.347.8

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
Value29323424242425
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.41.51.21.41.41.4

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-03-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.015111216131.3520.00.06.1440.4192.5411.0388.5981.8837.2312.6841.0544.2368.5391.2861.047.741102.569
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.50.60.90.80.10.00.00.30.00.80.32.70.62.61.10.51.32.60.40.42.73.91.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value141141141109110112114115117118121
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.06.232.633.836.538.641.042.246.753.5

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4244533440444757667059
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.92.31.72.22.52.73.23.74.03.6

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312013-12-312012-12-31
Value4544463640401.7641.9931.9771.4171.2635121
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.92.01.82.32.30.10.10.10.10.120.29.6

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
Value14815210676777880
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.36.54.63.84.34.44.5

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value27
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets1.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value22
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets1.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value19
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.8

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value15
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.7

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value34
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets1.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value140105109113116
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets6.15.96.16.46.6

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value159
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets7.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value19
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.8

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value17331735174817051484145914621444143714231425140822321820921520919818817316715814212712010692776954385650324064695642433873176192227205189176188
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets73.373.376.283.382.981.881.781.180.680.285.885.666.565.865.165.665.763.263.160.560.556.957.555.235.932.430.126.324.819.515.323.622.215.018.028.131.525.018.319.517.730.842.60.00.00.049.20.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value3040480.760.6590.2530.2330.4470.4490.2660.032-0.0220.00.00.0-0.145-0.1170.0880.184-0.0670.1030.028-0.0190.286-0.597-0.736-0.545-0.558-0.652-0.611-0.84-0.6450.00.040.2950.2850.2850.305-0.0790.181
Percentage of StockholdersEquity1.82.32.80.00.00.00.00.00.00.00.0-0.00.00.00.0-0.1-0.10.10.2-0.10.20.1-0.00.6-1.8-1.8-0.8-0.8-1.2-1.4-1.9-1.70.00.00.20.10.10.2-0.00.1
Percentage of Assets1.31.72.10.00.00.00.00.00.00.00.0-0.00.00.00.0-0.0-0.00.00.1-0.00.00.0-0.00.1-0.3-0.3-0.2-0.3-0.3-0.3-0.4-0.30.00.00.00.00.00.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-302010-03-312009-12-312008-12-312007-12-31
Value152315211519151512911287130913061305130413061301534947444137353229272422191714129.8327.5447.1376.2893.1230.3770.2999.2345.7311.9440.2956.0592.4380.01.2060.7011.6261.1571787
Percentage of StockholdersEquity87.987.686.988.987.088.289.590.490.891.691.792.423.722.822.520.419.619.118.818.517.617.417.317.416.116.015.715.914.113.918.311.06.11.20.714.28.33.50.713.86.40.00.70.30.80.69.846.2
Percentage of Assets64.464.266.274.072.172.273.273.373.173.578.779.115.715.014.713.412.912.111.911.210.79.910.09.65.85.24.74.23.52.72.82.61.40.20.14.02.60.90.12.71.10.00.30.00.00.30.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value0.2460.2470.2440.2440.2220.2220.220.220.2190.2190.2170.2170.1130.1130.1120.1120.1120.1120.1110.1110.1120.1120.110.110.110.110.1090.1090.1090.1080.1080.1090.1090.1080.1140.1190.1190.1190.1180.120.120.1240.1330.1360.1390.1390.140.1410.144
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.30.20.20.30.30.20.20.20.30.30.30.20.10.10.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1791741791881921711521371321181181061701681621711671601521411381301181041018977656046315047324156635442383673174192226203188158101
Percentage of StockholdersEquity10.310.110.311.012.911.710.49.59.28.38.37.676.377.277.479.580.380.981.181.582.382.582.682.583.984.084.183.785.985.781.388.893.1100.3100.886.492.497.5100.587.895.099.899.299.899.599.099.290.253.6
Percentage of Assets7.67.47.89.210.79.68.57.77.46.77.16.550.750.850.452.252.751.151.249.249.847.047.545.630.127.325.322.021.316.712.421.020.615.018.124.329.124.418.417.116.830.842.30.00.00.048.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value246000.0247000.0244000.0244000.0222000.0222000.0220000.0220000.0219000.0219000.0217000.0217000.0113000.0113000.0112000.0112000.0112000.0112000.0111000.0111000.0112000.0112000.0110000.0110000.0110000.0110000.0109000.0109000.0109000.0108000.0108000.0109000.0109000.0108000.0114000.0119000.0119000.0119000.0118000.0120000.0120000.0124000.0133000.0140000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value152315211519151512911287130913061305130413061301534947444137353229272422191714129.8327.5447.1376.2893.1230.3770.2999.2345.7311.9440.2956.0592.4380.01.2061.157
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of Assets64.464.266.274.072.172.273.273.373.173.578.779.115.715.014.713.412.912.111.911.210.79.910.09.65.85.24.74.23.52.72.82.61.40.20.14.02.60.90.12.71.10.00.30.3

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1791741791881921711521371321181181061701681621711671601521411381301181041018977656046315047324156635442383673174188
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.67.47.89.210.79.68.57.77.46.77.16.550.750.850.452.252.751.151.249.249.847.047.545.630.127.325.322.021.316.712.421.020.615.018.124.329.124.418.417.116.830.842.348.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3040480.760.6590.2530.2330.4470.4490.2660.032-0.145-0.1170.0880.184-0.0670.1030.028-0.0190.286-0.597-0.736-0.545-0.558-0.652-0.611-0.84-0.6450.00.040.305
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of Assets1.31.72.10.00.00.00.00.00.00.00.0-0.0-0.00.00.1-0.00.00.0-0.00.1-0.3-0.3-0.2-0.3-0.3-0.3-0.4-0.30.00.00.1

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2020-12-312020-09-30
Value0.0220
Percentage of StockIssuedDuringPeriodValueNewIssues0.0100.0
Percentage of Assets0.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2020-12-312020-09-30
Value0.0220
Percentage of StockIssuedDuringPeriodValueNewIssues0.0100.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.0

us-gaap:CommonStock


Stock
Period End2020-12-312020-09-30
Value0.00.022
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:CommonStock0.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.1683.93.8513.8753.8593.0253.0863.0213.1552.8543.9595.0983.2492.6883.0582.9153.2272.4273.4372.4042.0352.8912.6372.6532.4722.4512.3952.5512.5461.9610.8933.1662.9822.25-3.8943.5283.442.393.4363.473.4362.8923.0032.8873.0383.059
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.1673.8683.853.863.8583.0253.0863.0213.1552.7723.9595.0983.2492.6883.0582.9153.2272.4273.4372.4042.0352.8912.6372.6532.4722.4512.3952.5512.5461.9610.8933.1662.9822.25-3.8943.5283.442.393.4363.473.4362.8923.0032.8873.0383.059
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.099.2100.099.6100.0100.0100.0100.0100.097.1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value0.0010.0320.0010.0150.0010.00.0010.00.082
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue0.00.80.00.40.00.00.00.02.9
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4778-15.8814643686038445861-44.673121711118.22924147.6827.7451423101330151611331120203124146.179363135206721532463
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.727.1-5.919.616.925.923.015.918.123.825.4-27.811.314.69.910.77.321.412.17.57.113.220.310.511.927.213.316.810.628.59.618.715.322.817.511.74.224.420.326.012.439.112.436.315.540.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-7.013-10.792-627.642-5.398-2.818-6.334-24.51-4.074-7.013-2.469-16.551155-4.363-4.233-3.478-6.138-4.594-3.841-5.66-3.649-7.821-3.666-3.105-2.53-4.223-2.834-2.844-1.739-1.323-0.996-1.611-2.121-2.626-2.368-6.568-8.294-5.821-4.05-12.104-6.825-6.6781.002142.94-10.669-12.361
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.3-3.7-234.6-2.3-1.1-2.4-9.3-1.7-2.9-1.0-6.896.5-3.8-3.6-2.9-5.7-4.1-3.3-4.7-3.6-7.2-3.3-2.7-2.6-3.8-2.5-2.5-1.7-1.2-0.9-1.3-1.9-2.0-1.7-4.6-6.7-4.0-2.7-7.8-5.0-4.10.68.32.0-6.7-7.8

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-17.632-17.104125205-13.004-38.663-13.328-12.691-14.267-15.534-9.623-5.814-2.889-2.889-2.855-2.854-2.854-2.8530.0-0.9530.0-0.4050.0-116.475-1.563-1.562-0.781-0.782-0.781-0.781-0.781-0.782-0.781-25.78-16.34-9.372-4.372-36.865-19.444-21.978-34.119-61.187-55.606-60.42-17.334-23.438
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.9-5.946.886.0-5.1-14.6-5.1-5.2-5.8-6.3-4.0-3.6-2.5-2.5-2.4-2.6-2.5-2.50.0-0.90.0-0.40.0-117.5-1.4-1.4-0.7-0.8-0.7-0.7-0.6-0.7-0.6-18.7-11.5-7.5-3.0-24.7-12.5-16.2-20.8-35.6-32.3-40.9-10.9-14.8

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
Value2150-516.631247272322212340351045.7259.9275.4562.610.78317
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.317.2-193.1103.310.78.98.78.99.416.514.665.15.08.54.62.40.715.5

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value138000.0138000.0216000.083000.084000.083000.083000.083000.084000.083000.083000.078000.065000.066000.065000.066000.065000.066000.065000.066000.065000.066000.066000.0773000.0195000.0195000.0195000.0195000.0195000.0195000.0195000.0195000.0195000.0195000.0196000.0200000.0199000.0200000.0200000.0199000.0199000.065000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1.601-8.898-0.564-6.131-4.628-2.108-9.008-8.938-0.92510-11.879-2.8620.261-1.84210-2.168-2.3220.762-3.154-3.385-1.525-0.633-0.587-1.7371.511-1.2963.1121.197-1.0740.8183.827-1.134-1.6-0.74
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1513-20.8835.044-0.267-3.5530.4883.519-0.93-4.8470.347-11.1430.6672.2492.7960.3170.156-0.0191.878-0.180.472-0.7171.5561.9890.36-1.914-2.4983.832-0.681-1.338-0.448-3.651.155-1.081-0.847-0.1090.898-1.6863.806-1.149-3.3623.7302.194-1.6282.913
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4778-15.8814643686038445861-44.673121711118.22924147.6827.7451423101330151611331120203124146.179363135206721532463
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.727.1-5.919.616.925.923.015.918.123.825.4-27.811.314.69.910.77.321.412.17.57.113.220.310.511.927.213.316.810.628.59.618.715.322.817.511.74.224.420.326.012.439.112.436.315.540.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312013-03-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value199.5775.9171034352816241122-52.7815.1889.467-6.4956.2271010112.8787.78612133.7231111124.9531314-18.9573.149151717164.10321232613293535233536
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.73.32.24.613.313.310.86.910.04.79.3-32.84.58.1-5.55.79.19.29.82.87.211.211.53.810.810.211.24.912.112.7-15.32.911.412.512.511.73.314.516.017.110.318.120.820.915.822.423.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value199.5775.9171034352816241122-52.7815.1889.467-6.4956.2271010112.8787.78612133.7231111124.9531314-18.9573.1491517164.10221232613293535233536
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.73.32.24.613.313.310.86.910.04.79.3-32.84.58.1-5.55.79.19.29.82.87.211.211.53.810.810.211.24.912.112.7-15.32.911.412.511.73.314.516.017.110.318.120.820.915.822.423.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1034352816241122-52.7815.1889.467-6.4956.2271010112.878
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.613.313.310.86.910.04.79.3-32.84.58.1-5.55.79.19.29.82.8

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.1683.93.8513.8753.8593.0253.0852.4993.5663.013.7515.8443.252.6883.0582.9143.2282.4273.4372.4042.0362.8912.6372.6532.4722.4512.3952.5512.5461.9610.8933.1662.9822.25-3.8943.5273.442.393.4363.473.4352.8923.0032.8873.0383.059
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensation us-gaap:IncomeStatementLocation

stra:InstructionalandSupportCost


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.2811.2251.391.3561.030.9451.0170.8580.7030.4990.62
Percentage of ShareBasedCompensation30.731.435.935.134.037.828.528.512.015.423.1

us-gaap:GeneralAndAdministrativeExpense


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.3682.6752.5162.4852.5031.9952.0822.0772.1381.6732.7072.5912.7512.0682.4782.3662.5832.2572.6831.8822.4742.242.0352.0341.9262.0841.9732.1452.0711.5271.6732.3512.1381.153-4.6292.551
Percentage of ShareBasedCompensation80.868.665.364.164.966.067.583.160.055.672.244.384.676.981.081.280.093.078.178.3121.577.577.276.777.985.082.484.181.377.9187.374.371.751.2118.972.3

us-gaap:RestructuringCharges


Share
Period End2021-06-30
Value-0.481
Percentage of ShareBasedCompensation-11.5

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-7.013-10.792-627.642-5.398-2.818-6.334-24.51-4.074-7.013-2.469-16.551155-4.363-4.233-3.478-6.138-4.594-3.841-5.66-3.649-7.821-3.666-3.105-2.53-4.223-2.834-2.844-1.739-1.323-0.996-1.611-2.121-2.626-2.368-6.568-8.294-5.821-4.05-12.104-6.825-6.6781.002142.94-10.669-12.361
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.3-3.7-234.6-2.3-1.1-2.4-9.3-1.7-2.9-1.0-6.896.5-3.8-3.6-2.9-5.7-4.1-3.3-4.7-3.6-7.2-3.3-2.7-2.6-3.8-2.5-2.5-1.7-1.2-0.9-1.3-1.9-2.0-1.7-4.6-6.7-4.0-2.7-7.8-5.0-4.10.68.32.0-6.7-7.8

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1012129.3221114108.91108.756117.4324.3634.2333.4786.1384.5943.8415.663.6491.8212.0313.1052.534.2232.8342.8441.7391.3230.9961.6112.1212.6262.3686.5688.2945.8214.055.1046.8256.67811139.421012
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-17.632-17.104125205-13.004-38.663-13.328-12.691-14.267-15.534-9.623-5.814-2.889-2.889-2.855-2.854-2.854-2.8530.0-0.9530.0-0.4050.0-116.475-1.563-1.562-0.781-0.782-0.781-0.781-0.781-0.782-0.781-25.78-16.34-9.372-4.372-36.865-19.444-21.978-34.119-61.187-55.606-60.42-17.334-23.438
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.9-5.946.886.0-5.1-14.6-5.1-5.2-5.8-6.3-4.0-3.6-2.5-2.5-2.4-2.6-2.5-2.50.0-0.90.0-0.40.0-117.5-1.4-1.4-0.7-0.8-0.7-0.7-0.6-0.7-0.6-18.7-11.5-7.5-3.0-24.7-12.5-16.2-20.8-35.6-32.3-40.9-10.9-14.8

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1414141413131311111111112.8892.8892.8552.8542.8542.853111111111111121313101010
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.00.00.2470.00.00.00.00.024200.05512742517.00215
Percentage of PaymentsForRepurchaseOfCommonStock0.00.00.0100.00.00.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3.432.4-3.027.0370.0280.235-0.03-0.035-0.1950.6040.14-0.057-0.0870.185
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-312010-12-31
Value65.863.4966.867.3651.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.9551.95107.28107.28107.28
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312013-06-302013-03-31
Value5347591.9541.406
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-31
Value300000.0300000.0314000.01100000.01200000.01200000.01165000.01400000.01400000.0900000.0624000.00.70000.3300000.00176000.0505000.02936000.01745000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.0

stra:BenefitRedeemed

stra:BenefitRedeemed


Benefit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5.7645.4215.7125.8425.6275.6085.8125.9226.2275.7985.6285.2955.534.96730-4.832-4.156-3.563-0.019-4.444-4.505-3.236-2.677-2.129-1.211-0.634
Percentage of BenefitRedeemed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentEstimateOfWorkingCapital us-gaap:BusinessAcquisition

stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentEstimateOfWorkingCapital

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value4700000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentEstimateOfWorkingCapital100.0

stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentEstimateOfWorkingCapital us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stra:LaureateEducationAustraliaandNewZealandOperations, us-gaap:SubsequentEvent


Business
Period End2020-11-03
Value3300000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentEstimateOfWorkingCapital70.2

stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetCash us-gaap:BusinessAcquisition

stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetCash

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value11
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetCash100.0

stra:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetCash us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stra:LaureateEducationAustraliaandNewZealandOperations, us-gaap:SubsequentEvent


Business
Period End2020-11-03
Value16
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetCash145.5

stra:FundsReceivedFromInvestor us-gaap:BusinessAcquisition

stra:FundsReceivedFromInvestor

stra:JackWelchManagementInstitute


Funds
Period End2020-12-31
Value0
Percentage of FundsReceivedFromInvestor0.0

stra:ImpairmentOfRightOfUseAssets

stra:ImpairmentOfRightOfUseAssets


Impairment
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value00453000.000
Percentage of ImpairmentOfRightOfUseAssets0.00.0100.00.00.0

stra:PaymentsforProceedsfromofShareBasedCompensationNet

stra:PaymentsforProceedsfromofShareBasedCompensationNet


Paymentsfor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-0.0432.326-0.0370.02-0.331250.01.5883.1644.443-1.417
Percentage of PaymentsforProceedsfromofShareBasedCompensationNet100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

stra:RevenueDeferred

stra:RevenueDeferred


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
Value4.9196.5167.4185.1026.7637.1798.7136.5717.8426.9458.5585.8747.0325.8857.8665.5126.285.7022.9675.7366.4995.5645.4594.674.153.603
Percentage of RevenueDeferred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-16000.0-24000.0-38000.0-40000.0-3000.0-65000.0-10000.0-66000.0-93000.0-127000.0-166000.0-132000.000
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.0372.92.8472.8782.8662.2482.2921.8482.6432.2513.0824.2372.3561.9361.8491.7631.9531.4692.0381.4471.2341.7921.5951.6051.4861.4951.471.5361.5331.180.5371.9061.7951.355-2.3562.1342.0811.4462.0612.0992.0781.751.8161.7471.838
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationIntegrationRelatedCosts

us-gaap:BusinessCombinationIntegrationRelatedCosts


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.9371.0125.9122.921.1743.764101.53.0197.1797.954292.8245.3478.4653.414
Percentage of BusinessCombinationIntegrationRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value15
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred100.0

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stra:LaureateEducationAustraliaandNewZealandOperations, us-gaap:SubsequentEvent


Business
Period End2020-11-03
Value19
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred122.9

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2021-03-31
Value-300000.0
Percentage of BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment100.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-162019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.60.60.60.60.60.50.50.50.50.50.50.250.250.250.250.250.25
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLoss


Debt
Period End2020-12-312020-09-302020-06-30
Value0035000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGainLoss0.00.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3234302626252526262525194.885.0355.0154.7434.6054.374.5414.4034.4484.4254.3934.4194.5794.7134.8484.9555.0245.803176.1276.2446.196.1166.1085.9325.8175.7465.6145.2614.9044.4964.3114.3044.198
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1414141413131311111111112.8892.8892.8552.8542.8542.85311111111111138-13.174-75.7651031-10.47
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1414141413131311111111112.8892.8892.8552.8542.8542.85311111111111138-13.174-75.7651031-10.47
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-31
Value-530000.0-866000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1131000.01000000.01004000.0997000.0993000.0777000.0793000.0651000.0923000.0759000.0669000.01607000.0894000.0752000.01209000.01151000.01275000.0958000.01399000.0957000.0802000.01099000.01042000.01048000.0986000.0956000.0925000.01015000.01013000.0781000.0356000.01260000.01187000.0895000.0-1538000.01393000.01359000.0944000.01375000.01371000.01357000.01142000.01187000.01140000.01200000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-30
Value-82000.0100000.000100000.02700000.00500000.02100000.01400000.001500000.02000000.01200000.00600000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions100.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentDividendsOrDistributions


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1557000.0702000.01371000.0701000.00340000.01000.00175000.0851000.000
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.00.0100.0100.00.0100.0100.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease

stra:DeferredPayments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value22000.0418000.0-345000.0395000.0-303000.0282000.0-301000.0722000.0-467000.0762000.0-246000.0526000.040000.0698000.090000.0-4924000.0640000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements

stra:DeferredPayments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-30
Value0730000.00820000.00808000.00828000.00751000.00756000.00656000.00622000.06890000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0

us-gaap:FairValueOfAssetsAcquired

us-gaap:FairValueOfAssetsAcquired


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-926000.07526000.01583000.0267000.0837000.01392000.01585000.0981000.0206000.0634000.0-1946000.01723000.0-1133000.02385000.0985000.0280000.0-102000.0571000.0237000.0-162000.0183000.091000.0-268000.087000.0-178000.0724000.0-171000.0374000.0187000.022000.0-227000.0-283000.0-149000.0706000.0-1603000.01547000.0-640000.01225000.0-972000.0-180000.0373000.01894000.02841000.0874000.0546000.01247000.0
Percentage of FairValueOfAssetsAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value9.32511139.2687.1148.579
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss

us-gaap:GoodwillForeignCurrencyTranslationGainLoss


Goodwill
Period End2021-06-302021-03-31
Value7.6247.301
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss us-gaap:StatementBusinessSegments

stra:AustraliaNewZealandSegment


Goodwill
Period End2021-06-302021-03-31
Value7.6247.301
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:GoodwillPurchaseAccountingAdjustments


Goodwill
Period End2021-06-302021-03-312019-12-312019-09-30
Value0262000.00-901000.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.00.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:BusinessAcquisition

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Goodwill
Period End2021-03-31
Value300000.0
Percentage of GoodwillPurchaseAccountingAdjustments114.5

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:StatementBusinessSegments

stra:AustraliaNewZealandSegment


Goodwill
Period End2021-06-302021-03-31
Value0262000.0
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0

us-gaap:GoodwillTransfers us-gaap:StatementBusinessSegments

us-gaap:GoodwillTransfers

stra:AlternativeLearningSegment


Goodwill
Period End2021-06-302021-03-31
Value0.0100
Percentage of GoodwillTransfers0.0100.0

stra:USHigherEducationSegment


Goodwill
Period End2021-06-302021-03-31
Value0.0-100.0
Percentage of GoodwillTransfers0.0-100.0

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse


Impairment
Period End2021-06-302021-03-31
Value02000000.0
Percentage of ImpairmentOfLongLivedAssetsHeldForUse0.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value889000.02714000.0250000.0370000.01010000.0232000.077000.0706000.0600000.0957000.0-91000.00
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2.441-10.276-23.36622-15.152-7.0282.267-2.2513.766-3.53710-10.3122.23-0.867-5.2439.1523.395-2.836-3.0873.5513.609-4.335-1.7753.831-1.825-0.983-3.66515-5.04-0.336-0.3047.7240.684-8.220.36613-10.1212.369-7.8657.4412.403-5.339
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable


Increase
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-4.6292.989128.3233.548-16.7046.0317.352-4.421-7.4423.9953.772-1.248-10.2427.0894.446-1.54-7.9344.621.63-3.182-4.167.5470.764-6.358-2.8939.2241.208-1.618-3.638113.324-7.494-15.57915-2.864-2.848-17.034217.698-8.413-21.06120
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1246-14.6352.4870.1521.901-2.5955.5333.0761.7022.617-24.7141.5761.1922.826
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-7.333122.98912
Percentage of IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-30
Value-1.245-1.519-1.48-1.445-1.039-1.3260.101-1.187-0.451-1.008-0.282-1.065-0.153-6.111-2.852-0.335-2.516-0.904-2.0-2.38-1.6750.31-1.128-1.131-1.609-4.808-4.451-3.505290.2090.0180.147-0.8260.6624.5070.02
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.5899.897232.3466.569-0.231-0.1870.7910.261-0.325-0.446-0.2430.939-0.115-0.382-0.371-0.432-0.397-0.399-0.375-0.3442.983-0.020.0-0.366-0.496-0.001-0.0010.0040.0010.001-0.0210.154-0.022-0.044-0.019-0.0170.0010.344-0.025-0.062
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-06-302020-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2559000.0-978000.0-1480000.0-1445000.020000.081000.0196000.0180000.063000.059000.0603000.0
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends

us-gaap:IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value146000.0172000.0-10000.0198000.0232000.0240000.0-19000.0279000.0274000.0459000.000450000.0521000.017000.0471000.0469000.0456000.035000.0212000.0189000.0186000.06000.0143000.0118000.0140000.016000.092000.058000.052000.02000.042000.033000.037000.0
Percentage of IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value5000.07000.0-2000.012000.016000.021000.0-11000.044000.058000.092000.00051000.045000.01000.038000.041000.035000.019000.0-3000.0-5000.015000.0-3000.035000.041000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseImpairmentLoss

us-gaap:OperatingLeaseImpairmentLoss


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.6140.00.453
Percentage of OperatingLeaseImpairmentLoss100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value0025000.0000000
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax0.00.0100.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax


Other
Period End2020-12-312020-09-302020-06-30
Value0010000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax0.00.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value35000.0-104000.052000.0101000.0406000.020000.0-214000.0-2000.0183000.0234000.054000.0-22000.00000-40000.00-255000.010000.00-20000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value35000.0-104000.052000.0101000.0406000.020000.0-214000.0-2000.0183000.0234000.054000.0-22000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0300000.013000.035000.0154000.098000.0-67000.01000.040000.0116000.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingIncome

us-gaap:OtherNonoperatingIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value0.7572.1670.9121.6392.1233.2434.1253.3271.110.4470.2890.141
Percentage of OtherNonoperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRestructuringCosts

us-gaap:OtherRestructuringCosts


Other
Period End2021-06-302021-03-312019-12-31
Value2.1681.191.586
Percentage of OtherRestructuringCosts100.0100.0100.0

us-gaap:OtherRestructuringCosts us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

stra:SeveranceAndOtherEmployeeSeparationCosts, stra:A2020RestructuringPlan


Other
Period End2021-06-302021-03-31
Value2.1681.19
Percentage of OtherRestructuringCosts100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-31
Value1.7252.856111.4491.2782.7082.1432.0773.342.4242.1481.1070.6770.7240.7390.7931.031.0612.0047.646-4.7471.535-12.7948.4912.3953.3233.775.068
Percentage of PaymentsForRestructuring100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

stra:SeveranceAndOtherEmployeeSeparationCosts, stra:A2020RestructuringPlan


Payments
Period End2021-06-302021-03-312020-12-31
Value1.1142.12310
Percentage of PaymentsForRestructuring64.674.391.0

stra:SeveranceAndOtherEmployeeSeparationCosts, stra:CapellaEducationCompanyIntegrationRestructuringPlan


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.6110.7331.0471.4151.2782.7082.143
Percentage of PaymentsForRestructuring35.425.79.097.7100.0100.0100.0

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsOfStockIssuanceCosts


Payments
Period End2020-08-10
Value9200000.0
Percentage of PaymentsOfStockIssuanceCosts100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.01.863225.3266.1946.24913110.00.0
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt0.00.00.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Payments
Period End2020-11-03
Value658
Percentage of PaymentsToAcquireBusinessesGross100.0

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

stra:LaureateEducationAustraliaandNewZealandOperations, us-gaap:SubsequentEvent


Payments
Period End2020-11-03
Value662
Percentage of PaymentsToAcquireBusinessesGross100.5

us-gaap:PaymentsToAcquireLimitedPartnershipInterests

us-gaap:PaymentsToAcquireLimitedPartnershipInterests


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value190000.072000.0182000.075000.0175000.0118000.0157000.0366000.0245000.0300000.0571000.0166000.0
Percentage of PaymentsToAcquireLimitedPartnershipInterests100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLimitedPartnershipInterests us-gaap:StatementScenario

srt:ScenarioForecast


Payments
Period End2027-12-31
Value2100000.0
Percentage of PaymentsToAcquireLimitedPartnershipInterests0.0

us-gaap:ScenarioForecast


Payments
Period End2027-12-31
Value2400000.0
Percentage of PaymentsToAcquireLimitedPartnershipInterests0.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value190000.072000.0182000.075000.0575000.0118000.01780000.0138000.0366000.0374000.0
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2020-12-312020-08-10
Value0.0220
Percentage of ProceedsFromIssuanceOfCommonStock0.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.6651.93133.9997.59.90510109.712105.8420.00.0
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.6651.93133.9998.9649.90510109.65
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value001464000.00000000
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt0.00.0100.00.00.00.00.00.00.00.0

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value9.7371014111111
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4.811188.3584.0240.00.01.5860.20.21.93.231130.00.00.0143.4
Percentage of RestructuringCharges100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:RestructuringCharges us-gaap:RestructuringPlan

stra:A2020RestructuringPlan


Restructuring
Period End2020-09-30
Value4.0
Percentage of RestructuringCharges99.4

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.996460.3364.5574.3663.5040.3491.7841.1081.19
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302011-09-30
Value-1000.0-2339000.00-42000.0-6000.0-25797000.00-251000.0-3668000.0-3554000.0-350000.0-426000.00
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0-2342000.00-42000.0-6000.0-25799000.00-251000.0-3668000.0-1000.00-426000.00-1000.0000-1000.001000.00-2000.0000-1000.0001000.0000-1000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures-0.0100.10.0100.0100.0100.00.0100.0100.00.0-0.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-1000.03000.00002000.00001000.00001000.00001000.00-1000.002000.00001000.000-1000.00001000.000
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures100.0-0.10.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302010-12-312010-09-302010-06-302010-03-31
Value0.0430.070.0370.0210.3390.847-0.001-1.5641.491-1.6991.8176.8310.00.00.00.452
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302010-12-312010-09-302010-06-302010-03-31
Value0.0430.070.0370.0210.3390.847-0.001-1.5651.491-1.71.8176.830.00.00.00.452
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.1100.0100.1100.0100.00.00.00.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.9040.00.00.00.2470.00.00.024-20.00.0-55.427-127.237-42.289-51.225-7.002-15.001
Percentage of StockRepurchasedDuringPeriodValue100.00.00.00.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.3330.00.00.00.1050.00.00.01.752-9.3510.0-1.059-3.165-1.797-4.72-4.058-4.623
Percentage of StockRepurchasedDuringPeriodValue80.30.00.00.042.50.00.00.07.046.80.01.92.54.29.258.030.8

us-gaap:RetainedEarnings


Stock
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.5710.00.00.00.1420.00.00.023-10.6470.0-54.363-124.063-40.489-46.502-2.944-10.377
Percentage of StockRepurchasedDuringPeriodValue19.70.00.00.057.50.00.00.093.053.20.098.197.595.790.842.069.2

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense


Unrecognized
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value16000.022000.017000.0100000.072000.028000.0000000
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense100.0100.0100.0100.0100.0100.00.00.00.00.00.00.0

stra:AccruedLicensingFee

stra:AccruedLicensingFee


Accrued
Period End2020-09-30
Value25
Percentage of AccruedLicensingFee100.0

stra:AccruedStudentObligations

stra:AccruedStudentObligations


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4084000.04536000.04017000.03957000.04261000.04402000.04580000.04284000.0
Percentage of AccruedStudentObligations100.0100.0100.0100.0100.0100.0100.0100.0

stra:BusinessAcquisitionAgreementValue us-gaap:BusinessAcquisition

stra:BusinessAcquisitionAgreementValue

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value642
Percentage of BusinessAcquisitionAgreementValue100.0

stra:BusinessAcquisitionAgreementValue us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stra:LaureateEducationAustraliaandNewZealandOperations, us-gaap:SubsequentEvent


Business
Period End2020-11-03
Value642
Percentage of BusinessAcquisitionAgreementValue100.0

stra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedCurrentLiabilitiesLeaseObligation us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedCurrentLiabilitiesLeaseObligation

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value9685000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedCurrentLiabilitiesLeaseObligation100.0

stra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedNoncurrentLiabilitiesLeaseObligation us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedNoncurrentLiabilitiesLeaseObligation

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value34
Percentage of BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedNoncurrentLiabilitiesLeaseObligation100.0

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value796
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill100.0

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value33
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses100.0

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesContractWithCustomerLiability us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesContractWithCustomerLiability

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value33
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesContractWithCustomerLiability100.0

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesTaxesPayable us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesTaxesPayable

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value229000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesTaxesPayable100.0

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset us-gaap:BusinessAcquisition

stra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value44
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRightOfUseAsset100.0

stra:ContractLiabilitiesFairValuePercentageOfCarryingValue us-gaap:BusinessAcquisition, us-gaap:ValuationTechnique

stra:ContractLiabilitiesFairValuePercentageOfCarryingValue

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:CostApproachValuationTechnique


Contract
Period End2020-11-03
Value70.0
Percentage of ContractLiabilitiesFairValuePercentageOfCarryingValue100.0

stra:DeferredAcquisitionPaymentsNonCurrent

stra:DeferredAcquisitionPaymentsNonCurrent


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.7150.6374.2324.1221.9614.8375.4335.4335.9045.7416.3976.026.3855.9791113131414206.0785.8325.6155.4885.1984.9674.9154.9164.915
Percentage of DeferredAcquisitionPaymentsNonCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:DeferredPaymentArrangementValue

stra:DeferredPaymentArrangementValue


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.70.61.41.32.22.02.62.63.12.93.63.23.63.23.73.33.42.93.13.33.33.02.82.72.4
Percentage of DeferredPaymentArrangementValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:DeferredPaymentsCurrent us-gaap:BalanceSheetLocation

stra:DeferredPaymentsCurrent

us-gaap:AccountsPayableAndAccruedLiabilities


Deferred
Period End2021-06-302021-03-312020-12-312020-09-30
Value1400000.01300000.01600000.01200000.0
Percentage of DeferredPaymentsCurrent100.0100.0100.0100.0

stra:DeferredTaxAssetsDeferredGainOnSaleOfPropertyNonCurrent

stra:DeferredTaxAssetsDeferredGainOnSaleOfPropertyNonCurrent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value0.5820.4892.082.6225.2426.5348.903131.484
Percentage of DeferredTaxAssetsDeferredGainOnSaleOfPropertyNonCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:DeferredTaxAssetsDeferredLeasingCostsNonCurrent

stra:DeferredTaxAssetsDeferredLeasingCostsNonCurrent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value28271.6731.7893.0642.8252.7973.0823.475
Percentage of DeferredTaxAssetsDeferredLeasingCostsNonCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:DeferredTaxLiabilityDeferredRightOfUseLeaseAssets

stra:DeferredTaxLiabilityDeferredRightOfUseLeaseAssets


Deferred
Period End2020-12-312019-12-31
Value1921
Percentage of DeferredTaxLiabilityDeferredRightOfUseLeaseAssets100.0100.0

stra:EstimatedGraduationFundToBeRedeemedNextTwelveMonths

stra:EstimatedGraduationFundToBeRedeemedNextTwelveMonths


Estimated
Period End2021-06-302021-03-312020-09-30
Value202120
Percentage of EstimatedGraduationFundToBeRedeemedNextTwelveMonths100.0100.0100.0

stra:EstimatedGraduationFundToBeRedeemedNextTwelveMonths us-gaap:BalanceSheetLocation

stra:CurrentLiability


Estimated
Period End2020-12-31
Value20
Percentage of EstimatedGraduationFundToBeRedeemedNextTwelveMonths0.0

stra:FiniteLivedIntangibleAssetMeasurementInput us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

stra:FiniteLivedIntangibleAssetMeasurementInput

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, stra:StudentRelationships, stra:MeasurementInputAnnualAttritionRate, stra:ValuationTechniqueExcessEarningsMethod


Finite
Period End2020-11-03
Value60.0
Percentage of FiniteLivedIntangibleAssetMeasurementInput100.0

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, stra:StudentRelationships, us-gaap:MeasurementInputDiscountRate, stra:ValuationTechniqueExcessEarningsMethod


Finite
Period End2020-11-03
Value11.0
Percentage of FiniteLivedIntangibleAssetMeasurementInput18.3

stra:GraduationFundLiability

stra:GraduationFundLiability


Graduation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value53545351525149464644434039383734333129262523201815129.7067.3451.898
Percentage of GraduationFundLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

stra:GraduationFundLiability us-gaap:ProductOrService

stra:UndergraduateDegreePrograms


Graduation
Period End2020-12-312019-12-31
Value5249
Percentage of GraduationFundLiability98.799.9

stra:IndefiniteLivedIntangibleAssetMeasurementInput us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

stra:IndefiniteLivedIntangibleAssetMeasurementInput

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:TradeNames, stra:MeasurementInputRoyaltyRate, stra:ReliefFromRoyaltyApproachValuationTechnique


Indefinite
Period End2020-11-03
Value2.5
Percentage of IndefiniteLivedIntangibleAssetMeasurementInput100.0

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:TradeNames, us-gaap:MeasurementInputDiscountRate, stra:ReliefFromRoyaltyApproachValuationTechnique


Indefinite
Period End2020-11-03
Value11.0
Percentage of IndefiniteLivedIntangibleAssetMeasurementInput440.0

stra:IndefiniteLivedIntangibleAssetMeasurementInput us-gaap:Range, us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

srt:Maximum, stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:TradeNames, us-gaap:MeasurementInputLongTermRevenueGrowthRate, stra:ReliefFromRoyaltyApproachValuationTechnique


Indefinite
Period End2020-11-03
Value6.3
Percentage of IndefiniteLivedIntangibleAssetMeasurementInput252.0

srt:Minimum, stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:TradeNames, us-gaap:MeasurementInputLongTermRevenueGrowthRate, stra:ReliefFromRoyaltyApproachValuationTechnique


Indefinite
Period End2020-11-03
Value2.5
Percentage of IndefiniteLivedIntangibleAssetMeasurementInput100.0

stra:LesseeOperatingLeaseLeaseNotyetCommencedAmount

stra:LesseeOperatingLeaseLeaseNotyetCommencedAmount


Lessee
Period End2020-12-31
Value60
Percentage of LesseeOperatingLeaseLeaseNotyetCommencedAmount100.0

stra:LicenseAgreementCommitmentForPrepaidExpenses us-gaap:BusinessAcquisition

stra:LicenseAgreementCommitmentForPrepaidExpenses

stra:JackWelchManagementInstitute


License
Period End2020-12-31
Value25
Percentage of LicenseAgreementCommitmentForPrepaidExpenses100.0

stra:LicenseAgreementCommitmentForPrepaidExpenses us-gaap:StatementScenario, us-gaap:BusinessAcquisition

srt:ScenarioForecast, stra:JackWelchManagementInstitute


License
Period End2020-12-31
Value25
Percentage of LicenseAgreementCommitmentForPrepaidExpenses100.0

stra:NumberOfStudents us-gaap:Range, us-gaap:BusinessAcquisition

stra:NumberOfStudents

srt:Minimum, stra:LaureateEducationAustraliaandNewZealandOperations


Number
Period End2020-07-29
Value19000.0
Percentage of NumberOfStudents100.0

stra:PropertyPlantAndEquipmentMeasurementInput us-gaap:BusinessAcquisition, us-gaap:MeasurementInputType, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:ValuationTechnique

stra:PropertyPlantAndEquipmentMeasurementInput

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, stra:MeasurementInputRoyaltyRate, stra:CourseContent, stra:ReliefFromRoyaltyApproachValuationTechnique


Property
Period End2020-11-03
Value3.0
Percentage of PropertyPlantAndEquipmentMeasurementInput100.0

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:MeasurementInputDiscountRate, stra:CourseContent, stra:ReliefFromRoyaltyApproachValuationTechnique


Property
Period End2020-11-03
Value11.0
Percentage of PropertyPlantAndEquipmentMeasurementInput366.7

stra:PropertyPlantAndEquipmentMeasurementInput us-gaap:Range, us-gaap:BusinessAcquisition, us-gaap:MeasurementInputType, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:ValuationTechnique

srt:Maximum, stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:MeasurementInputLongTermRevenueGrowthRate, stra:CourseContent, stra:ReliefFromRoyaltyApproachValuationTechnique


Property
Period End2020-11-03
Value6.2
Percentage of PropertyPlantAndEquipmentMeasurementInput206.7

srt:Minimum, stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:MeasurementInputLongTermRevenueGrowthRate, stra:CourseContent, stra:ReliefFromRoyaltyApproachValuationTechnique


Property
Period End2020-11-03
Value5.6
Percentage of PropertyPlantAndEquipmentMeasurementInput186.7

stra:RealEstateLiabilities

stra:RealEstateLiabilities


Real
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value640000.0638000.0668000.0441000.0486000.0741000.0751000.05156000.0
Percentage of RealEstateLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1009710411567819085
Percentage of AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, stra:DeferredPayments


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1.3681.3461.6582.0032.4282.7313.2573.5583.6644.1314.124.3664.514
Percentage of AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent1.41.41.61.73.63.33.60.00.00.04.80.00.0

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, stra:DeferredPayments


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1.3681.3461.6582.0032.4282.7313.2573.5583.6644.1314.124.3664.514
Percentage of AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent1.41.41.61.73.63.33.60.00.00.04.80.00.0

us-gaap:AccountsPayableTradeCurrentAndNoncurrent

us-gaap:AccountsPayableTradeCurrentAndNoncurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5954645733514736
Percentage of AccountsPayableTradeCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableGrossCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value128112999083798282788084774038353332313028292828262323252424262629
Percentage of AccountsReceivableGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNetNoncurrent us-gaap:BalanceSheetLocation

us-gaap:AccountsReceivableNetNoncurrent

us-gaap:OtherAssets


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value3200000.03400000.03600000.03200000.03100000.03100000.01000000.01100000.01200000.0800000.01100000.03900000.03400000.03300000.02900000.02600000.02600000.02400000.02300000.02000000.02000000.02000000.0
Percentage of AccountsReceivableNetNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEmployeeBenefitsCurrentAndNoncurrent

us-gaap:AccruedEmployeeBenefitsCurrentAndNoncurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3033332523213335
Percentage of AccruedEmployeeBenefitsCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value494949444238303130292825151312121110109.7949.98110109.7768.7338.6888.8358.5679.14410105.8195.7776.4766.5967.3737.3178.1087.2797.0256.9826.7837.9356.175
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value8651000.08623000.07647000.01984000.01902000.01954000.01961000.0
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent us-gaap:BusinessAcquisition

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Asset
Period End2020-12-31
Value5800000.0
Percentage of AssetRetirementObligationsNoncurrent75.8

us-gaap:AssetRetirementObligationsNoncurrent us-gaap:StatementBusinessSegments

stra:AustraliaNewZealandSegment


Asset
Period End2021-03-312020-12-31
Value6900000.05800000.0
Percentage of AssetRetirementObligationsNoncurrent80.075.8

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

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.8834.9412.841105.876393041369.4411.7913.271
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value323537515563715965697571
Percentage of AssetsFairValueDisclosure1704.8723.21331.5506.3936.4161.7233.0143.4179.1734.64204.32184.7

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3340406160102102101101787774
Percentage of AssetsFairValueDisclosure1804.8823.21431.5606.31036.4261.7333.0243.4279.1834.64304.32284.7

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent


Assets
Period End2021-06-30
Value5801000.0
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value727000.0679000.0817000.0760000.0695000.0283000.0277000.0338000.0320000.0178000.057000.08000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

stra:TaxExemptMunicipalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value418000.0324000.0365000.0275000.0215000.0221000.0112000.0131000.0129000.083000.045000.01000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax57.547.744.736.230.978.140.438.840.346.678.912.5

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value309000.0355000.0452000.0485000.0480000.062000.0165000.0207000.0191000.095000.012000.07000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax42.552.355.363.869.121.959.661.259.753.421.187.5

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12000.082000.0229000.0255000.035000.019000.098000.0318000.0341000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

stra:TaxExemptMunicipalSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12000.074000.069000.0215000.029000.02000.09000.034000.069000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.090.230.184.382.910.59.210.720.2

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value313537505463715964687571
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

stra:TaxExemptMunicipalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value181819212123231315182221
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis58.954.053.843.540.236.832.623.323.627.830.529.8

stra:VariableRateDemandNotes


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.65.65.65.65.65.61.64.08.7
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis11.110.38.87.89.48.72.35.312.1

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value121617222634424043464841
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis41.146.046.245.449.554.459.667.367.868.464.258.1

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2829303031363626253137
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.046.4557.557202326343339363738
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue us-gaap:FinancialInstrument

stra:VariableRateDemandNotes


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.65.65.65.65.65.61.64.08.7
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue27.424.220.916.116.714.34.410.822.8

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3235375155637159656874710.0
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

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

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, stra:TaxExemptMunicipalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value181920222223231415192221
Percentage of AvailableForSaleSecuritiesDebtSecurities58.953.853.643.440.037.032.423.423.727.930.629.8

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, stra:VariableRateDemandNotes


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.65.65.65.65.65.61.64.08.7
Percentage of AvailableForSaleSecuritiesDebtSecurities11.010.28.87.89.38.62.35.312.2

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


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value131617232734424044474841
Percentage of AvailableForSaleSecuritiesDebtSecurities41.146.246.445.749.854.259.767.367.769.864.758.0

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

us-gaap:FairValueMeasurementsRecurring, stra:TaxExemptMunicipalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value181920222223231415192221
Percentage of AvailableForSaleSecuritiesDebtSecurities58.953.853.643.440.037.032.423.423.727.930.629.8

us-gaap:FairValueMeasurementsRecurring, stra:VariableRateDemandNotes


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.65.65.65.65.65.61.64.08.7
Percentage of AvailableForSaleSecuritiesDebtSecurities11.010.28.87.89.38.62.35.312.2

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value131617232734424044474841
Percentage of AvailableForSaleSecuritiesDebtSecurities41.146.246.445.749.854.259.767.367.769.864.758.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

stra:TaxExemptMunicipalSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value181920222223231415192221
Percentage of AvailableForSaleSecuritiesDebtSecurities58.953.853.643.440.037.032.423.423.727.930.629.8

stra:VariableRateDemandNotes


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.65.65.65.65.65.61.64.08.7
Percentage of AvailableForSaleSecuritiesDebtSecurities11.010.28.87.89.38.62.35.312.2

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value131617232734424044464741
Percentage of AvailableForSaleSecuritiesDebtSecurities41.146.246.445.749.854.259.767.367.768.364.158.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.046.4557.5572023263433393637
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2829303031363626253137
Percentage of AvailableForSaleSecuritiesDebtSecuritiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionCostOfAcquiredEntityTransactionCosts us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionCostOfAcquiredEntityTransactionCosts

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2021-06-302021-03-312020-12-31
Value8.18.18.0
Percentage of BusinessAcquisitionCostOfAcquiredEntityTransactionCosts100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value16
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value17
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value24
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value18
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, us-gaap:TradeNames


Business
Period End2020-11-03
Value68
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value103
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, stra:StudentRelationships


Business
Period End2020-11-03
Value34
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value137
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value7520000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value2.799
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value41
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:ValuationTechnique

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ, stra:CourseContent, stra:ReliefFromRoyaltyApproachValuationTechnique


Business
Period End2020-11-03
Value10.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment23.9

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

stra:TorrensUniversityAndRelatedAssetsInAustraliaAndNewZealandANZ


Business
Period End2020-11-03
Value658
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value333334323231302726232321232021
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-31
Value7307000.04459000.04174000.0
Percentage of DeferredTaxAssetsCapitalLossCarryforwards100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value8500000.08139000.06107000.05445000.07182000.04267000.03758000.0
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6713000.01955000.03650000.03271000.0-1592000.0-948000.0-533000.0-411000.04000.0-19000.017000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.3186.322191520161213131310
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value148.8847.9433.25
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value8465821.196
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2013183.3266.0599.417111315155.631
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2020-12-31
Value30
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:Range

us-gaap:EquityMethodInvestmentOwnershipPercentage

srt:Maximum


Equity
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value5.05.05.00.050.050.050.050.05
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum


Equity
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.03.03.00.030.030.030.030.03
Percentage of EquityMethodInvestmentOwnershipPercentage60.060.060.060.060.060.060.060.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1717151617151515141313
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue us-gaap:FairValueByLiabilityClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue

stra:DeferredPayments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1.3681.3461.6582.0032.4282.7313.2573.5583.6644.1314.124.3664.5964.5564.5144.4249.9712111212123.2783.0322.8152.6882.3982.1672.1152.1162.1152.1162.1162.1152.1192.1532.1522.22.2
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value49494944423830
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value16915213578645036239.223
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

stra:StudentRelationships


Finite
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value16915213578645036239.223
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value44
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value10
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value12
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross

stra:StudentRelationships


Finite
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value202202202166166166166166
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization

us-gaap:HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization


Hosting
Period End2021-06-302021-03-312020-12-31
Value8112000.07330000.06385000.0
Percentage of HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization100.0100.0100.0

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued


Income
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value45000.0119000.036000.00100000.0200000.0300000.0400000.0
Percentage of IncomeTaxExaminationPenaltiesAndInterestAccrued100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2020-12-312019-09-302019-06-302018-12-312018-09-302013-09-302012-12-312012-09-302012-06-302011-12-31
Value1.4296.97100.06.9950.9074.4547.9640.1360.394
Percentage of IncomeTaxesReceivable100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value4594604623513513513513517.26
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value40
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LineOfCredit us-gaap:CreditFacility

us-gaap:LineOfCredit

us-gaap:RevolvingCreditFacility


Line
Period End2021-06-302021-03-312020-12-31
Value141141141
Percentage of LineOfCredit100.0100.0100.0

us-gaap:LineOfCredit us-gaap:Currency, us-gaap:CreditFacility

currency:AUD, us-gaap:RevolvingCreditFacility


Line
Period End2021-06-302021-03-312020-12-31
Value3.73.83.8
Percentage of LineOfCredit2.62.72.7

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:RevolvingCreditFacility, stra:AmendedCreditFacility, us-gaap:SubsequentEvent


Line
Period End2020-07-292020-07-28
Value350250
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value4.374.15
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value10107.8034.993.679
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0100.0100.0

us-gaap:OtherCommitment us-gaap:StatementScenario

us-gaap:OtherCommitment

srt:ScenarioForecast


Other
Period End2027-12-31
Value1800000.0
Percentage of OtherCommitment100.0

us-gaap:OtherLiabilities

us-gaap:OtherLiabilities


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4620000.04327000.02848000.02703000.04961000.03809000.04070000.04129000.0
Percentage of OtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherLongTermInvestments

us-gaap:OtherLongTermInvestments


Other
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value2999000.02527000.02527000.02527000.02123000.0
Percentage of OtherLongTermInvestments100.0100.0100.0100.0100.0

us-gaap:OtherSundryLiabilitiesNoncurrent

us-gaap:OtherSundryLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2677000.02877000.02827000.01415000.01860000.01748000.01764000.0
Percentage of OtherSundryLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseNoncurrent

us-gaap:PrepaidExpenseNoncurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value212222260.191
Percentage of PrepaidExpenseNoncurrent100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseNoncurrent us-gaap:BusinessAcquisition

stra:JackWelchManagementInstitute


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-30
Value19202021
Percentage of PrepaidExpenseNoncurrent93.691.292.380.4

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302015-09-302015-06-302014-12-31
Value1113140.30.80.90.3040.0020.0020.0050.0050.0150.00.0080.0150.0090.0150.70.0340.2
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue us-gaap:StatementBusinessSegments

stra:AustraliaAndNewZealand


Restricted
Period End2020-12-31
Value13
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue99.2

stra:StrayerOrCapellaUniversity


Restricted
Period End2020-12-312019-12-31
Value0.1230.304
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue0.9100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue us-gaap:StatementGeographical

country:US


Restricted
Period End2021-06-302021-03-312020-12-31
Value0.30.30.1
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue2.52.30.7

stra:AustraliaAndNewZealand


Restricted
Period End2021-06-302021-03-312020-12-31
Value111213
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue97.297.499.2

us-gaap:RestructuringReserve

us-gaap:RestructuringReserve


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1.8991.4563.1226.8724.2975.5758.2838.84101320197.4548.0988.7819.476101011131516202224252729343944
Percentage of RestructuringReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringReserve us-gaap:RestructuringCostAndReserve, us-gaap:RestructuringPlan

stra:SeveranceAndOtherEmployeeSeparationCosts, stra:A2020RestructuringPlan


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-30
Value1.4080.3541.2873.99
Percentage of RestructuringReserve74.124.341.258.1

stra:SeveranceAndOtherEmployeeSeparationCosts, stra:CapellaEducationCompanyIntegrationRestructuringPlan


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value0.4911.1021.8352.8824.2975.5758.2838.8414
Percentage of RestructuringReserve25.975.758.841.9100.0100.0100.0100.068.7

us-gaap:RestructuringReserveCurrent us-gaap:BalanceSheetLocation

us-gaap:RestructuringReserveCurrent

us-gaap:AccountsPayableAndAccruedLiabilities


Restructuring
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1.53.16.93.94.66.46.26.88.49.87.92.73.03.13.23.64.04.25.04.8
Percentage of RestructuringReserveCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-312009-12-31
Value117.9198.98114.43114.38112.86107.5199.6599.6499.6495.8297.5397.5894.3693.98104.66104.64104.64109.71115.67115.85115.73124.65131.51129.42135.25137.76178.88178.74178.39194.26204.89194.39
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312017-12-312016-12-312015-12-312013-12-312012-12-312011-12-31
Value60.9851.9551.9551.9551.95107.28107.28
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-03-312014-12-312014-09-302014-06-302010-12-31
Value0.7554.39811196.1064.913.7633.5324.1272.8542.8680.8170.3020.1462.2330.7935.6e-054.494
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased

us-gaap:EmployeeStock


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value112.65126.83100.3477.0546.4649.144.5542.2771.14
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-31
Value720000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

stra:StockRepurchasePlan


Stock
Period End2020-12-312016-12-312015-12-312014-12-312013-12-31
Value25070707070
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0100.0100.0100.0100.0

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:RevolvingCreditFacility, stra:AmendedCreditFacility


Unamortized
Period End2020-11-032018-08-01
Value1900000.01200000.0
Percentage of UnamortizedDebtIssuanceExpense100.0100.0

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnbilledReceivablesCurrent


Unbilled
Period End2021-06-302021-03-312020-12-312020-09-30
Value500000.0600000.0900000.01500000.0
Percentage of UnbilledReceivablesCurrent100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-31
Value-200000.0
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0

Line plots across dimensions of each concept


Operating Margin
us-gaap:StatementBusinessSegments
(None,)
Operating  Marginus-gaap: Statement Business Segments
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments
(None,)
Operating Income Lossus-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments
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:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents
(None,)
Stock Issued During Period Value New Issuesus-gaap: Statement Equity Components
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
(None,)
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Valueus-gaap: Statement Equity Components
us-gaap:ShareBasedCompensation
us-gaap:IncomeStatementLocation
(None,)
Share Based Compensationus-gaap: Income Statement Location