CRVL


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

Table of contents



us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic
us-gaap:AwardType

us-gaap:EarningsPerShareDiluted
us-gaap:AwardType
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType, us-gaap:IncomeStatementLocation

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaid

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:BalanceSheetLocation

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:AwardType
crvl:AllocatedShareBasedCompensationExpenseAndRecoveries
us-gaap:ShareRepurchaseProgram
crvl:CommonStockEqualsToPercentageOfOutstandingCommonStock

crvl:ContractWithCustomerLiabilityIncreaseThroughContractsAcquired

crvl:ContractWithCustomerLiabilityRevenueRecognizedFromAdditions

crvl:IncreaseDecreaseInAccountsAndTaxesPayable

crvl:IncreaseDecreaseInOperatingLeaseLiability

crvl:LesseeOperatingLeaseCommitmentsNotYetCommenced

crvl:ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities

crvl:ShareholderPlanPercentageOfAcquiredEntity

crvl:ShareholderPlanPercentageOfMergedEntity
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:FinanceLeaseInterestExpense

us-gaap:GainLossOnDispositionOfAssets

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockPlans

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
us-gaap:Vesting
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:ShortTermLeaseCost

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:ShareRepurchaseProgram
us-gaap:SubsequentEventType
us-gaap:SubsequentEventType
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents
us-gaap:SubsequentEventType

us-gaap:VariableLeaseCost

crvl:AccountsAndIncomeTaxesPayable

crvl:AccountsAndTaxesPayable

crvl:AccruedOperatingLeaseLiabilities

crvl:DeferredTaxAssetsDeferredPayrollTaxes

crvl:DeferredTaxLiabilitiesAccruedRevenue

crvl:DeferredTaxLiabilitiesRightOfUseAsset

crvl:FutureAccruedIncomeTaxesCurrentIncludedInCurrentPeriod

crvl:IncomeTaxesPayableCurrentAndUncertainTaxPositions

crvl:LeaseLiability

crvl:LesseeLeaseLiabilityPaymentDueNextTwelveMonths

crvl:LesseeLeaseLiabilityPaymentsDue

crvl:LesseeLeaseLiabilityPaymentsDueAfterYearFive

crvl:LesseeLeaseLiabilityPaymentsDueYearFive

crvl:LesseeLeaseLiabilityPaymentsDueYearFour

crvl:LesseeLeaseLiabilityPaymentsDueYearThree

crvl:LesseeLeaseLiabilityPaymentsDueYearTwo

crvl:LesseeLeaseLiabilityUndiscountedExcessAmount

crvl:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour
us-gaap:PlanName
crvl:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased

dei:EntityPublicFloat

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:BilledContractReceivables

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization

us-gaap:CapitalizedComputerSoftwareNet

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:ContractWithCustomerRefundLiabilityCurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DepositsAssetsCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:PrepaidExpenseCurrent

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:SelfInsuranceReserveCurrent

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:Range
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

us-gaap:TreasuryStockCommonValue

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Income Tax Expense Benefit
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Operating Lease Right Of Use Asset
Current Assets
Accounts Receivable Net Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Accrued Income Taxes Current
Stockholders Equity
Common Stock Value
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
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

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 18.22NA18.1818.17418.114NA18.52618.77118.787NA18.98419.08919.102NA19.12118.96619.0NA19.54919.73319.754NA19.85220.06320.335NA20.78621.0521.21NA21.25621.37721.584NA11.21311.37611.426NA11.57411.67211.787NA11.98412.10412.187
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 17.897NA17.89917.93717.983NA18.25318.45218.524NA18.75818.87718.922NA18.84918.75918.811NA19.42619.58119.572NA19.67319.90220.149NA20.59920.81920.935NA20.93621.13821.396NA11.11711.2711.313NA11.42111.52611.617NA11.74911.86111.957
us-gaap:EarningsPerShareBasic █▇▅▅▃▅▄▆▆▅▄▅▅▃▄▃▃▃▂▂▂▂▂▃▂▁▂▂▃▃▃▃▃▆▄▅▄▃▃▅▆▁▄▅▅0.940.830.640.660.460.650.510.70.720.640.550.680.620.470.510.450.470.420.360.360.380.340.340.420.340.270.330.380.40.40.420.410.40.70.530.590.580.450.470.680.710.229999999999999760.570.640.65
us-gaap:EarningsPerShareDiluted █▇▅▅▃▅▄▆▆▅▄▅▅▃▄▃▃▃▂▂▃▂▂▃▂▁▂▂▃▃▃▃▃▆▄▅▅▃▃▆▆▁▄▅▅0.920.810.630.650.460.640.50.690.710.630.540.670.620.470.50.440.460.420.360.350.380.340.340.410.340.270.330.370.390.390.410.410.40.70.530.580.580.440.470.680.70.229999999999999760.560.620.64
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType crvl:TimeBasedOptionsAndPerformanceBasedOptions▇█▆▆▅▄▆▆▆▆▅▄▆▃▄▂▄▃▂▂▂▂▁▁▂▂▁▁1.3451.4941.2511.2380.9950.9191.1431.1981.2251.2391.0230.9081.1790.7820.8520.6070.9220.6960.6090.6120.5160.590.4980.4880.6160.6150.4320.445NANANANANANANANANANANANANANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType,us-gaap:IncomeStatementLocation crvl:TimeBasedOptionsAndPerformanceBasedOptions,us-gaap:CostOfSales▇▇▇▇▇▇▇▇▆█▆▆▅▅▅▅▆▄▄▄▃▃▃▃▃▂▁▁0.5240.510.5160.5060.4880.4970.5290.5180.4850.5540.4650.4460.4310.4230.4320.4110.4830.3840.3910.3950.3370.3340.3210.3210.3110.2880.2390.255NANANANANANANANANANANANANANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType,us-gaap:IncomeStatementLocation crvl:TimeBasedOptionsAndPerformanceBasedOptions,us-gaap:GeneralAndAdministrativeExpense▇█▆▆▄▃▅▅▆▅▄▄▆▃▃▁▃▂▁▁▁▂▁▁▂▂▁▁0.8210.9840.7350.7320.5070.4220.6140.680.740.6850.5580.4620.7480.3590.420.1960.4390.3120.2180.2170.1790.2560.1770.1670.3050.3270.1930.19NANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold █▇▇▆▆██▇██████▇▇▇▆▆▆▆▆▅▅▆▅▅▅▅▅▅▄▄▄▃▃▃▃▃▃▂▂▂▁▁115.407109.792110.613105.525103.091116.28118.839114.127117.005118.472116.728116.686119.045116.422115.165110.679108.829105.884102.826102.307102.877101.84998.65997.776100.75699.52198.22498.24796.66493.70993.39292.03991.19588.0585.55382.62281.42582.96780.15578.9476.76474.78471.46170.15367.7
us-gaap:GeneralAndAdministrativeExpense ▅▅▅▄▄▄▅▅▄▅▄▄▄▄▄▃▃▄▃▃▂▄▃▂▄▃▃▂▃▃▂▂▂▁▁▁▂▂▂▂▂█▂▃▁16.64516.36516.93715.5615.58515.9217.016.59315.75216.46215.80315.09415.93715.55615.49613.6714.62915.00414.13414.64413.46115.81214.50113.20914.96213.61613.83412.74914.20513.70413.20412.22412.84211.89911.7111.98112.17413.18712.33212.59212.29421.08512.42514.17111.486
us-gaap:GrossProfit █▇▅▅▃▅▅▆▆▆▅▅▅▄▃▃▄▄▃▃▃▃▃▃▃▂▂▃▄▃▄▄▃▂▁▂▂▁▁▃▃▃▂▂▂37.21335.71930.89330.50326.50930.69129.25332.84333.13432.61229.35431.4931.35327.14925.56925.75228.78327.72125.57725.91225.58226.44525.23226.68426.18322.67424.12825.46727.726.53727.70627.3226.91823.90921.73422.83623.18121.4621.22625.61225.54325.70723.82123.23923.803
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▇▄▅▂▅▃▅▆▅▄▅▅▃▂▃▄▃▂▂▃▂▂▄▂▁▂▃▄20.56819.35313.95614.94310.92414.82512.25316.2517.38216.1513.55116.39615.41611.59510.07312.08214.15412.71711.44311.26812.12110.63310.73113.47511.2219.05810.29412.71813.495NANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▆▃▄▄▄▄▄▅▆▄▅▅▄▁▅▇▆▆▆▆▅▅▇▆▅▄▆▇▆▇█▇▆▅▅▆▄▅▆▆▃▆▂▆3.7254.5442.5763.0782.6223.0782.9013.3793.9754.3123.2533.6073.6382.6370.5043.6895.3794.734.3944.3164.633.9674.045.2084.3213.4823.4624.8355.1964.55.7276.4215.4674.434.14.2254.4113.23.4945.1395.0511.9764.6721.5354.557
us-gaap:IncomeTaxesPaid ▃█▄▆▃▄▅▇▃▅▄▅▃▆▅▅▃▅▅▆▄▁█▆▃▄▅█▃▆▆▆▃▄▅▄▃▃▅▆▃▅▄▅▃0.44210.933.5956.0240.2113.153.777.8470.313.9233.3465.5290.0566.3284.7045.0450.1524.3924.4277.6841.818-3.59910.2426.7850.1613.5065.3910.4490.1837.4565.7477.2880.32.9043.7492.90.110.2285.4196.9970.2914.7862.7895.3380.827
us-gaap:NetIncomeLoss █▇▅▆▄▅▄▆▆▆▅▆▆▄▄▄▄▄▃▃▃▃▃▄▃▂▃▄▄▄▄▄▄▃▃▃▃▂▂▄▄▁▃▃▄16.84314.80911.3811.8658.30211.7479.35212.87113.40711.83810.29812.78911.7788.9589.5698.3938.7757.9877.0496.9527.4916.6676.6918.2676.95.5766.8327.8838.2998.3338.7758.6758.6097.585.9246.636.5965.0735.47.8818.1982.6466.7247.5337.76
us-gaap:ProfitLoss █▆▄▄▁▄▂▅▅▄▃▅▄▂▂▁▁16.84314.80911.3811.8658.30211.7479.35212.87113.40711.83810.29812.78911.7788.9589.5698.3938.775NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▇▆▅▇▇▇██▇▇█▇▇▆▆▆▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁152.62145.51141.506136.028129.6147.024148.092146.97150.139151.084146.082148.176150.398143.573140.734136.431137.612133.605128.403128.219128.459128.294123.891124.46126.939122.195122.352123.714124.364120.246121.098119.359118.113111.959107.287105.458104.606104.427101.381104.552102.307100.49195.28293.39291.503
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets ▇▇██▇▇▇▇▇▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁422.483424.76457.865441.58425.009416.26422.08426.769427.864318.018313.745309.938291.21274.004271.995255.529240.459235.383237.725240.238227.444220.269218.58221.694216.622218.754211.341214.413211.074214.481202.891192.759191.383182.382174.987179.854173.614171.882165.887166.726172.45164.225NANANA
us-gaap:Liabilities ▆▆██▇▇▇▇▇▃▃▂▂▂▂▂▂▁▁▁▁▁▁192.944204.358247.992239.18226.917226.549228.715225.953224.047123.213121.477119.874109.345102.828111.815107.833101.79896.73794.72494.0986.8988.32190.519NANA90.831NANANA87.959NANANA70.98NANANA61.5NANANA64.586NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇▇██▇▇▇▇▇▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁422.483424.76457.865441.58425.009416.26422.08426.769427.864318.018313.745309.938291.21274.004271.995255.529240.459235.383237.725240.238227.444220.269218.58221.694216.622218.754211.341214.413211.074214.481202.891192.759191.383182.382174.987179.854173.614171.882165.887166.726172.45164.225NANANA
us-gaap:StockholdersEquity ██▇▇▆▆▆▆▇▆▆▆▅▅▄▄▃▃▃▄▃▃▃▃▂▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁229.539220.402209.873202.4198.092189.711193.365200.816203.817194.805192.268190.064181.865171.176160.18147.696138.661138.646143.001146.148140.554131.948128.061127.599127.197127.923130.39132.197130.521126.522118.997112.393114.312111.402109.969119.887115.185110.382109.519108.697105.58799.639NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent ███▇▆▆▆▆▆▆▆▆▅▄▄▄▃▃▃▃▃▃▃▃▂▃▂▃▂▃▂▂▂▂▁▁▁▁▁▁▁▁266.877268.941259.232242.308224.436208.991210.552219.086221.609215.493210.022204.143183.156163.317166.59148.301134.413128.867135.552138.697127.961123.108120.771122.884116.892119.228115.318119.109116.397120.96111.084100.36998.26892.987.62391.27284.07881.24777.62880.17386.88282.227NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ██▇▆▆▅▅▆▆▅▆▅▅▄▃▃▂▂▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▂▁▁▂▁138.662139.716128.829106.08294.11183.22389.62897.92104.42591.71396.48390.13373.3455.77153.59338.13335.00928.61138.80940.86236.23432.77926.50424.88727.10225.51631.02928.16234.13434.86632.74622.19225.03419.82220.76920.01414.5686.59710.0658.13417.57712.26915.76916.44711.442
us-gaap:AccountsReceivableNetCurrent ▇▆▆█▇▆▆█▇█▅▆▆▆▆▆▆▆▅▅▅▅▄▅▄▄▄▅▄▄▄▄▃▂▁▂▂▂▂▃▂▂67.25764.72263.57973.09567.46965.76766.18771.42166.84271.33662.4365.06566.12464.9463.48765.99662.76862.84159.18160.44560.70259.74755.87759.22556.9157.53756.22760.357.18657.22955.39154.39250.75849.10543.37748.74746.33249.33446.11950.82648.81348.964NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross NA259.186NANANA243.188NANANA240.273NANANA230.788NANANA206.78NANANA184.004NANANA175.011NANANA160.546NANANA144.135NANANA138.461NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType crvl:OfficeEquipmentAndComputersNA66.714NANANA66.398NANANA68.006NANANA67.73NANANA65.246NANANA60.061NANANA64.462NANANA64.525NANANA59.953NANANA62.366NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandBuildingsAndImprovementsNA11.081NANANA11.048NANANA5.843NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNA17.562NANANA14.962NANANA13.539NANANA14.461NANANA10.893NANANA9.06NANANA8.594NANANA5.134NANANA4.925NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNA163.829NANANA150.78NANANA152.885NANANA142.754NANANA130.641NANANA114.883NANANA101.955NANANA90.887NANANA79.257NANANA71.108NANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NA188.567NANANA167.288NANANA178.293NANANA161.432NANANA143.738NANANA130.736NANANA118.712NANANA109.293NANANA97.551NANANA91.097NANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▇▇▇▇███▇▆▅▅▆▆▇▆▆▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▃▂▂▂▁70.73670.61972.48371.9874.3675.976.95572.29468.20861.9862.86864.81466.84969.35663.65764.14963.15263.04258.19957.38655.75553.26853.61254.64756.18756.29952.91752.62551.83251.25349.67150.00750.50946.58444.67545.61146.53147.36444.88843.35142.14838.5NANANA
us-gaap:Goodwill ███████████████████████████████████████▁▁▁36.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.81436.76936.76936.769NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▁▁▁▂▂▂▂▂▂▃▃▃▃▃▃▄▄▄▄▄▄▅▅▅▅▅▅▆▆▆▆▆▆▇▇▇▇▇███1.9962.1042.2132.3222.4312.542.6482.7572.8662.9753.0833.1923.3063.4153.5243.6193.7283.8513.964.0694.1784.2874.3964.5084.6224.7364.8514.9655.0795.1935.3095.4275.5455.6635.7815.8986.0166.1466.2856.4336.5816.729NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NA0.613NANANANANANANANANANANANANANANANANANANANANANANA-9.562NANANA-9.258NANANA-11.777NANANA-9.501NANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▄▄▇▇▇████▁44.39145.32486.63387.586.2590.66693.54194.37996.7080.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▃▂▂▂▃▄▄▄▅▃▃▃▃▃▄▇▆▇██▇▇▇▇▅▅▄▃▃▂▁▁▂▂▁▂▁▂▂0.720.3450.490.6560.7181.3491.571.4391.6590.7560.9580.9751.0851.1021.412.6462.3522.8093.23.2722.7362.7922.9872.8412.1071.6771.4410.90.9520.2610.0130.1420.2470.4210.0940.2590.1750.3110.272NA0.070.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AccountsPayableCurrent ▃▄▃▃▄▆█▇█▂▂▁▂▃▄▄▄▅▅▅11.32912.35312.06511.2812.89715.14517.41216.12317.9329.9259.8939.09210.37311.78713.3313.31312.58813.86913.96114.13NA11.191NANANA13.578NANANA17.437NANANA12.559NANANA11.614NANANANANANANA
us-gaap:AccruedIncomeTaxesCurrent NA1.221NANANA0.0NANANA0.073NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccruedLiabilitiesCurrent ▇██▇▆▆▆▆▆▅▅▅▄▄▅▄▄▄▃▃▃▃▃▃▂▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▂135.993148.886141.328135.768121.917117.326115.066113.284107.601105.441102.153101.85688.8184.53692.96886.26374.76173.46871.47570.43961.16267.18262.16361.85355.33258.31851.65951.90944.99553.37547.01944.93839.33639.16834.49531.82930.64231.98932.3630.32537.72240.248NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ███▆▄▃▂▃▂▂▁▂22.09622.51422.52220.46618.72217.64516.83317.53816.64316.916.04916.956NA15.316NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▇██▇▇▆▆▆▆▅▅▅▅▄▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▃▂▂▂▂▁▁▁▁▁▁▂▂152.258162.46158.822149.077138.535133.689135.725132.941130.735116.919117.416115.557104.80197.989109.875101.70695.4490.05187.47886.61179.17880.41573.77677.35272.68274.08864.83266.09764.43471.8465.66962.14158.84652.75548.2843.22941.69144.76246.6248.28157.11554.838NANANA
us-gaap:OperatingLeaseLiabilityCurrent NANA13.65312.86713.08613.223NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation us-gaap:AccruedLiabilities█▁12.87912.765NANANA13.223NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▂▃▄▄▂▂▇▂▁▁▇▇▆▆█▆▆▆▃▃2.2512.3912.7662.5992.2962.2763.2932.1691.9262.0183.4943.4933.0883.0683.6563.1373.2173.2762.4662.462NA3.015NANANA1.269NANANA0.773NANANA0.501NANANA0.36NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:DeferredIncomeTaxLiabilitiesNet NANA6.8937.2057.5157.764NANANA6.294NANANA4.839NANANA6.686NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▄▄██▇████▁40.68641.89882.27782.89880.86785.09687.58787.32487.3240.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo 8.838NA14.21414.255NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree 7.833NA13.0513.009NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour 6.05NA12.91712.672NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ██▇▇▆▆▆▆▇▆▆▆▅▅▄▄▃▃▃▄▃▃▃▃▂▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁229.539220.402209.873202.4198.092189.711193.365200.816203.817194.805192.268190.064181.865171.176160.18147.696138.661138.646143.001146.148140.554131.948128.061127.599127.197127.923130.39132.197130.521126.522118.997112.393114.312111.402109.969119.887115.185110.382109.519108.697105.58799.639NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ██▇▇▆▆▆▆▆▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁192.431185.941179.675175.897171.412168.935166.24163.847160.522155.798152.523149.328146.102143.705141.666138.752138.11135.683135.151134.421133.227130.465128.497126.724124.89123.44122.337121.482120.255118.831116.435114.383112.533110.924110.02109.122107.786105.907104.738103.057101.496100.073NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▇▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁615.736598.893584.084572.704560.839552.537540.79531.438518.567505.16493.322483.024470.235458.457449.499439.93431.537422.762414.775407.726400.774393.283386.617379.925371.658364.758359.182352.35344.467336.168327.835319.06310.385301.776294.196288.272281.642275.046269.973264.573256.692248.494NANANA
us-gaap:TreasuryStockValue NA564.435NANANANANANANANANANA434.475430.989430.988430.989430.989419.802406.928396.002393.45391.803387.056379.053369.354360.278351.132341.638334.204328.48325.276321.053308.609301.301294.25277.51274.246270.574265.195258.936252.604248.931NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▇█▆▅▃▂▅▅▅▅▃▂▅▁▂1.3451.4941.2511.2380.9950.9191.1431.1981.2251.2391.0230.9081.1790.7820.852NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▄█▅▃▂▄▄▆▁▄▆▅▂▄▁▄14.4620.60934.26324.09615.41114.52919.85820.07726.36210.73619.30325.79522.80512.27419.2819.21821.379NANANANANANANANANANANANANA17.09111.72716.79311.22919.73110.39313.4667.64712.1520.69415.1796.87214.31412.95710.919
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▇▅█▇▇▂▃▄▆▇██▁▆▅▆-6.463-3.948-6.358-3.33-3.607-4.614-10.204-9.512-8.03-4.966-3.835-3.504-2.969-11.353-4.908-6.129-5.299NANANANANANANANANANANANANA-3.69-3.51-5.477-5.681-2.872-2.93-3.404-6.499-5.102-4.695-6.963-4.885-5.822-3.942-5.09
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▅▆▄▇▂▁▁▅▄▄▆▇███▄-9.051-5.774-5.158-8.795-0.916-16.32-17.946-17.07-5.62-10.54-9.118-5.498-2.2671.2571.0870.035-9.682NANANANANANANANANANANANANA-2.847-11.059-6.104-6.495-16.104-2.017-2.091-4.616-5.119-5.442-2.908-5.487-9.17-4.01-4.629
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▅█▆▅▁▁▁▆▂▄▇▇▃▆▄▄-1.05410.88722.74711.97110.888-6.405-8.292-6.50512.712-4.776.3516.79317.5692.17815.463.1246.398NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▁▄▄▄▅▄▄▄▅▄▄▄▅▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▄▄▄▅▄▄▄█▄▄▄▅▄▄▄-0.336-7.505-0.312-0.31-0.2492.361-0.285-0.3-0.3062.233-0.256-0.227-0.2942.898-3.213-0.231-0.328-0.56-0.233-0.234-0.193-1.065-0.192-0.19-0.2090.918-0.164-0.172-0.278-1.876-0.29-0.191-0.1622.532-0.104-0.032-0.129.724-0.212-0.267-0.1941.61-0.176-0.587-0.223
us-gaap:DepreciationDepletionAndAmortization ▆▆▆▆▆▆▁██▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▅▅▄▄▄▄▄▄▄5.95.8865.9075.8155.8285.698-0.9328.7838.9675.8885.8215.6425.6335.7625.4735.2375.3035.3315.2075.3595.0515.0444.9924.9714.9454.7334.5444.6014.1174.214.0824.1074.0123.8853.913.5854.3594.113.6263.5913.3963.2243.0783.0862.861
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▅▁▇▆▅▂▆▃█▄▄▅▅▄▆▅▆▄▅▅▆▃▆▄▅▃▆▅▅▅▆▅▇▃▆▃▆▃▆▅▇▄▄▅2.7051.21-9.065.9272.8992.606-7.4965.223-4.2979.161-2.518-0.8692.4972.221-1.6053.8390.2034.311-0.6610.4381.3414.131-3.1492.908-0.3231.602-3.423.5440.3122.1261.6583.6991.9736.114-4.7743.119-2.5653.759-4.412.7020.4655.991-0.031-0.7142.173
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▄█▅▃▂▄▄▆▁▄▆▅▂▄▁▄14.4620.60934.26324.09615.41114.52919.85820.07726.36210.73619.30325.79522.80512.27419.2819.21821.379NANANANANANANANANANANANANA17.09111.72716.79311.22919.73110.39313.4667.64712.1520.69415.1796.87214.31412.95710.919
us-gaap:NetIncomeLoss █▇▅▆▄▅▄▆▆▆▅▆▆▄▄▄▄▄▃▃▃▃▃▄▃▂▃▄▄▄▄▄▄▃▃▃▃▂▂▄▄▁▃▃▄16.84314.80911.3811.8658.30211.7479.35212.87113.40711.83810.29812.78911.7788.9589.5698.3938.7757.9877.0496.9527.4916.6676.6918.2676.95.5766.8327.8838.2998.3338.7758.6758.6097.585.9246.636.5965.0735.47.8818.1982.6466.7247.5337.76
us-gaap:ProfitLoss █▆▄▄▁▄▂▅▅▄▃▅▄▂▂▁▁16.84314.80911.3811.8658.30211.7479.35212.87113.40711.83810.29812.78911.7788.9589.5698.3938.775NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ▇█▇▇▆▅▆▇▇▇▆▅▆▄▅▄▅▄▄▄▃▃▃▃▄▄▃▃▄▄▄▃▃▂▂▁▂▃▃▄▄▄▄▄▃1.3451.4941.2511.2380.9950.9191.1431.1981.2251.2391.0230.9081.1790.7820.8530.6070.9220.6960.6080.6120.5160.590.4980.4880.6160.6150.4320.4450.7170.5940.6760.4650.4050.3470.2630.090.2970.4060.5410.6710.6580.650.630.6740.59
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▇▅█▇▇▂▃▄▆▇██▁▆▅▆-6.463-3.948-6.358-3.33-3.607-4.614-10.204-9.512-8.03-4.966-3.835-3.504-2.969-11.353-4.908-6.129-5.299NANANANANANANANANANANANANA-3.69-3.51-5.477-5.681-2.872-2.93-3.404-6.499-5.102-4.695-6.963-4.885-5.822-3.942-5.09
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▂▃▁▁▂▆▅▄▂▂▁▁▆▂▃▃█▃▃▃▂▂▁▂▄▂▃▂▃▂▁▃▃▁▁▁▃▂▂▄▂▂▂▂6.4633.9486.3583.333.6074.61410.2049.5128.034.9663.8353.5042.96911.3534.9086.1295.29913.8686.335.5585.2854.8553.8763.3294.6968.0624.9335.2854.5885.6673.693.515.4775.6812.8722.933.4046.4995.0574.6956.9634.8854.5873.9425.09
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▅▆▄▇▂▁▁▅▄▄▆▇███▄-9.051-5.774-5.158-8.795-0.916-16.32-17.946-17.07-5.62-10.54-9.118-5.498-2.2671.2571.0870.035-9.682NANANANANANANANANANANANANA-2.847-11.059-6.104-6.495-16.104-2.017-2.091-4.616-5.119-5.442-2.908-5.487-9.17-4.01-4.629
us-gaap:PaymentsForRepurchaseOfCommonStock ▆▅▄▅▂███▄▆▅▄▂▁▁▁▅▆▅▂▂▃▄▅▄▄▄▄▃▂▃▆▄▄▇▂▂▃▃▃▂▄▅▃▃14.19610.5467.68512.0422.39818.09619.19619.1979.11912.57611.2897.8163.4860.00.00.011.18712.87410.9262.5511.6484.7478.0039.6999.0769.1459.4957.4335.7253.2044.212.47.3087.05116.73.33.6735.3796.2596.3323.6737.82811.0026.3095.469
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value18181818181818181919191819191919192020202121212121111111111111111212
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value17171717181818181818181818191919191920202020202121111111111111111111
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.940.830.640.660.460.650.510.70.720.640.550.680.620.470.510.450.470.420.360.360.380.340.340.420.340.270.330.380.40.40.420.410.40.70.530.590.580.450.470.680.710.230.570.640.65
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasic us-gaap:AwardType

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-0.060.37-0.06-0.05-0.040.34-0.05-0.05-0.050.31-0.04-0.04-0.050.2-0.04-0.02-0.030.13-0.02-0.02-0.020.12-0.02-0.02-0.02
Percentage of EarningsPerShareBasic-6.444.6-9.4-7.6-8.752.3-9.8-7.1-6.948.4-7.3-5.9-8.142.6-7.8-4.4-6.431.0-5.6-5.6-5.335.3-5.9-4.8-5.9

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.920.810.630.650.460.640.50.690.710.630.540.670.620.470.50.440.460.420.360.350.380.340.340.410.340.270.330.370.390.390.410.410.40.70.530.580.580.440.470.680.70.230.560.620.64
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareDiluted us-gaap:AwardType

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-0.060.37-0.06-0.05-0.040.34-0.05-0.05-0.050.29-0.04-0.04-0.050.2-0.04-0.02-0.030.13-0.02-0.02-0.020.12-0.02-0.01-0.020.11-0.01-0.01
Percentage of EarningsPerShareDiluted-6.545.7-9.5-7.7-8.753.1-10.0-7.2-7.046.0-7.4-6.0-8.142.6-8.0-4.5-6.531.0-5.6-5.7-5.335.3-5.9-2.4-5.940.7-3.0-2.7

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1345000.01494000.01251000.01238000.0995000.0919000.01143000.01198000.01225000.01239000.01023000.0908000.01179000.0782000.0852000.0607000.0922000.0696000.0609000.0612000.0516000.0590000.0498000.0488000.0616000.0615000.0432000.0445000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.00.90.90.80.60.80.80.80.80.70.60.80.50.60.40.70.50.50.50.40.50.40.40.50.50.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:TimeBasedOptionsAndPerformanceBasedOptions0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType, us-gaap:IncomeStatementLocation

crvl:TimeBasedOptionsAndPerformanceBasedOptions, us-gaap:CostOfSales


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value524000.0510000.0516000.0506000.0488000.0497000.0529000.0518000.0485000.0554000.0465000.0446000.0431000.0423000.0432000.0411000.0483000.0384000.0391000.0395000.0337000.0334000.0321000.0321000.0311000.0288000.0239000.0255000.0
Percentage of AllocatedShareBasedCompensationExpense39.034.141.240.949.054.146.343.239.644.745.549.136.654.150.767.752.455.264.264.565.356.664.565.850.546.855.357.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.40.40.40.40.30.40.40.30.40.30.30.30.30.30.30.40.30.30.30.30.30.30.30.20.20.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:TimeBasedOptionsAndPerformanceBasedOptions us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

crvl:TimeBasedOptionsAndPerformanceBasedOptions, us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value821000.0984000.0735000.0732000.0507000.0422000.0614000.0680000.0740000.0685000.0558000.0462000.0748000.0359000.0420000.0196000.0439000.0312000.0218000.0217000.0179000.0256000.0177000.0167000.0305000.0327000.0193000.0190000.0
Percentage of AllocatedShareBasedCompensationExpense61.065.958.859.151.045.953.756.860.455.354.550.963.445.949.332.347.644.835.835.534.743.435.534.249.553.244.742.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.70.50.50.40.30.40.50.50.50.40.30.50.30.30.10.30.20.20.20.10.20.10.10.20.30.20.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:TimeBasedOptionsAndPerformanceBasedOptions us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value11510911010510311611811411711811611611911611511010810510210210210198971009998989693939291888582818280787674717067
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax75.675.578.277.679.579.180.277.777.978.479.978.779.281.181.881.179.179.380.179.880.179.479.678.679.481.480.379.477.777.977.177.177.278.679.778.377.879.479.175.575.074.475.075.174.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value161616151515171615161515151515131415141413151413141313121413131212111111121312121221121411
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.911.212.011.412.010.811.511.310.510.910.810.210.610.811.010.010.611.211.011.410.512.311.710.611.811.111.310.311.411.410.910.210.910.610.911.411.612.612.212.012.021.013.015.212.6

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value373530302630293233322931312725252827252525262526262224252726272726232122232121252525232323
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.424.521.822.420.520.919.822.322.121.620.121.320.818.918.218.920.920.719.920.219.920.620.421.420.618.619.720.622.322.122.922.922.821.420.321.722.220.620.924.525.025.625.024.926.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value201913141014121617161316151110121412111112101013119.058101213
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.513.39.911.08.410.18.311.111.610.79.311.110.38.17.28.910.39.58.98.89.48.38.710.88.87.48.410.310.9

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.7254.5442.5763.0782.6223.0782.9013.3793.9754.3123.2533.6073.6382.6370.5043.6895.3794.734.3944.3164.633.9674.045.2084.3213.4823.4624.8355.1964.55.7276.4215.4674.434.14.2254.4113.23.4945.1395.0511.9764.6721.5354.557
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.43.11.82.32.02.12.02.32.62.92.22.42.41.80.42.73.93.53.43.43.63.13.34.23.42.82.83.94.23.74.75.44.64.03.84.04.23.13.44.94.92.04.91.65.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.442103.5956.0240.2113.153.777.8470.313.9233.3465.5290.0566.3284.7045.0450.1524.3924.4277.6841.818-3.599106.7850.1613.5065.39100.1837.4565.7477.2880.32.9043.7492.90.110.2285.4196.9970.2914.7862.7895.3380.827
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.37.52.54.40.22.12.55.30.22.62.33.70.04.43.33.70.13.33.46.01.4-2.88.35.50.12.94.48.40.16.24.76.10.32.63.52.70.10.25.36.70.34.82.95.70.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value161411118.302119.3521213111012118.9589.5698.3938.7757.9877.0496.9527.4916.6676.6918.2676.95.5766.8327.8838.2998.3338.7758.6758.6097.585.9246.636.5965.0735.47.8818.1982.6466.7247.5337.76
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.28.08.76.48.06.38.88.97.87.08.67.86.26.86.26.46.05.55.45.85.25.46.65.44.65.66.46.76.97.27.37.36.85.56.36.34.95.37.58.02.67.18.18.5

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value161411118.302119.3521213111012118.9589.569
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.28.08.76.48.06.38.88.97.87.08.67.86.26.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value161411118.302119.3521213111012118.9589.5698.3938.775
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.28.08.76.48.06.38.88.97.87.08.67.86.26.86.26.4

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value152145141136129147148146150151146148150143140136137133128128128128123124126122122123124120121119118111107105104104101104102100959391
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

crvl:NetworkSolutionsServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value52484445445349515054535662
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.233.531.833.734.236.633.634.933.736.336.937.941.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.233.531.833.734.236.633.634.933.736.336.937.941.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:NetworkSolutionsServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:PatientManagementServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value100969690859398959996929187
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.866.568.266.365.863.466.465.166.363.763.162.158.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.866.568.266.365.863.466.465.166.363.763.162.158.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:PatientManagementServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value422424457441425416422426427318313309291274271255240235237240227220218221216218211214211214202192191182174179173171165166172164
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value1922042472392262262282252241231211191091021111071019694948688909087706164
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.748.154.254.253.454.454.252.952.438.738.738.737.537.541.142.242.341.139.839.238.240.141.441.541.038.935.839.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value422424457441425416422426427318313309291274271255240235237240227220218221216218211214211214202192191182174179173171165166172164
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value229220209202198189193200203194192190181171160147138138143146140131128127127127130132130126118112114111109119115110109108105999596
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.351.945.845.846.645.645.847.147.661.361.361.362.562.558.957.857.758.960.260.861.859.958.657.658.758.561.761.761.859.058.758.359.761.162.866.766.364.266.065.261.260.70.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1921851791751711681661631601551521491461431411381351301231181101051009084
Percentage of StockholdersEquity83.884.485.686.986.589.086.081.678.880.079.378.680.384.088.493.997.998.996.593.999.695.9100.494.287.6
Percentage of Assets45.543.839.239.840.340.639.438.437.549.048.648.250.252.452.154.357.659.256.455.460.861.660.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value615598584572560552540531518505493483470458449439422393364336301275248223197
Percentage of StockholdersEquity268.2271.7278.3283.0283.1291.3279.7264.6254.4259.3256.6254.1258.6267.8280.6297.9304.9298.1285.1265.7270.9249.2249.4233.8205.3
Percentage of Assets145.7141.0127.6129.7132.0132.7128.1124.5121.2158.8157.2155.8161.5167.3165.3172.2179.6178.5166.7156.7165.5160.0151.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-578.631-564.435-553.889-546.204-534.162-531.764-513.668-494.472-475.275-466.156-453.58-442.291-434.475-430.989-430.989-430.989-419.802-391.803-360.278-328.48-301.301-270.574-248.931-218.323-185.762
Percentage of StockholdersEquity-252.1-256.1-263.9-269.9-269.7-280.3-265.6-246.2-233.2-239.3-235.9-232.7-238.9-251.8-269.1-291.8-302.8-296.9-281.6-259.6-270.5-245.1-249.8-228.1-192.9
Percentage of Assets-137.0-132.9-121.0-123.7-125.7-127.7-121.7-115.9-111.1-146.6-144.6-142.7-149.2-157.3-158.5-168.7-178.3-177.9-164.7-153.2-165.2-157.4-151.60.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value26626825924222420821021922121521020418316316614813412813513812712312012211611911511911612011110098928791848177808682
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets63.263.356.654.952.850.249.951.351.867.866.965.962.959.661.258.055.954.757.057.756.355.955.355.454.054.554.655.655.156.454.852.151.350.950.150.748.447.346.848.150.450.1

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-03-31
Value13813912810694838997104919690735553383528384036322624272531283434322225192020146.597108.13417121516111013
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.832.928.124.022.120.021.222.924.428.830.829.125.220.419.714.914.612.216.317.015.914.912.111.212.511.714.713.116.216.316.111.513.110.911.911.18.43.86.14.910.27.50.00.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value676463736765667166716265666463656262596060595559565756605757555450494348464946504848
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.915.213.916.615.915.815.716.715.622.419.921.022.723.723.325.826.126.724.925.226.727.125.626.726.326.326.628.127.126.727.328.226.526.924.827.126.728.727.830.528.329.8

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value259243240230206184175160144138
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets61.058.475.684.287.883.580.074.979.080.6

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

crvl:OfficeEquipmentAndComputers


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value66666867656064645962
Percentage of PropertyPlantAndEquipmentGross25.727.328.329.331.632.636.840.241.645.0
Percentage of Assets15.716.021.424.727.727.329.530.132.936.3
Percentage of Assets crvl:OfficeEquipmentAndComputers0.00.00.00.00.00.00.00.00.00.0

us-gaap:LandBuildingsAndImprovements


Property
Period End2021-03-312020-03-312019-03-31
Value11115.843
Percentage of PropertyPlantAndEquipmentGross4.34.52.4
Percentage of Assets2.62.71.8
Percentage of Assets us-gaap:LandBuildingsAndImprovements0.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value17141314109.068.5945.1344.925
Percentage of PropertyPlantAndEquipmentGross6.86.25.66.35.34.94.93.23.4
Percentage of Assets4.13.64.35.34.64.13.92.42.7
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value163150152142130114101907971
Percentage of PropertyPlantAndEquipmentGross63.262.063.661.963.262.458.356.655.051.4
Percentage of Assets38.636.248.152.155.552.246.642.443.541.4
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value1881671781611431301181099791
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.440.256.158.961.159.454.351.053.553.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value707072717475767268616264666963646363585755535354565652525151495050464445464744434238
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.716.615.816.317.518.218.216.915.919.520.020.923.025.323.425.126.326.824.523.924.524.224.524.625.925.725.024.524.623.924.525.926.425.525.525.426.827.627.126.024.423.4

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value363636363636363636363636363636363636363636363636363636363636363636363636363636363636
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.78.78.08.38.78.88.78.68.611.611.711.912.613.413.514.415.315.615.515.316.216.716.816.617.016.817.417.217.417.218.119.119.220.221.020.521.221.422.222.121.322.4

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1996000.02104000.02213000.02322000.02431000.02540000.02648000.02757000.02866000.02975000.03083000.03192000.03306000.03415000.03524000.03619000.03728000.03851000.03960000.04069000.04178000.04287000.04396000.04508000.04622000.04736000.04851000.04965000.05079000.05193000.05309000.05427000.05545000.05663000.05781000.05898000.06016000.06146000.06285000.06433000.06581000.06729000.0
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.50.60.60.60.60.70.91.01.01.11.21.31.41.61.61.71.71.81.92.02.02.12.22.32.32.42.42.62.82.93.13.33.33.53.63.83.93.84.1

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-03-312020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2086000.02508000.02929000.03034000.03140000.03250000.03356000.03461000.03554000.03660000.03778000.03884000.03989000.04095000.04201000.04306000.04412000.04517000.04623000.04730000.04835000.04940000.05046000.05151000.05257000.05363000.05469000.05574000.05679000.05786000.05891000.0
Percentage of FiniteLivedIntangibleAssetsNet99.198.798.598.498.498.398.398.298.298.298.198.198.098.098.098.097.997.797.697.597.497.397.297.096.996.796.696.496.396.295.9
Percentage of Assets0.50.60.91.01.01.11.21.31.41.51.61.61.71.81.92.02.02.12.12.22.32.32.42.52.72.83.03.23.23.33.4
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LicensingAgreements


Finite
Period End2021-03-312020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value18000.032000.046000.049000.052000.056000.059000.063000.065000.068000.073000.076000.080000.083000.086000.090000.093000.097000.0100000.0103000.0107000.0110000.0114000.0117000.0120000.0124000.0127000.0131000.0134000.0137000.0141000.0
Percentage of FiniteLivedIntangibleAssetsNet0.91.31.51.61.61.71.71.81.81.81.91.92.02.02.02.02.12.12.12.12.22.22.22.22.22.22.22.32.32.32.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:LicensingAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2021-03-312015-03-312014-03-312013-03-312012-03-31
Value613000.0-9562000.0-9258000.0-11777000.0-9501000.0
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0
Percentage of Assets0.1-4.4-4.3-6.5-5.5

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
Value4445868786909394960.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets10.510.718.919.820.321.822.222.122.60.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-06-302011-03-31
Value720000.0345000.0490000.0656000.0718000.01349000.01570000.01439000.01659000.0756000.0958000.0975000.01085000.01102000.01410000.02646000.02352000.02809000.03200000.03272000.02736000.02792000.02987000.02841000.02107000.01677000.01441000.0900000.0952000.0261000.013000.0142000.0247000.0421000.094000.0259000.0175000.0311000.0272000.070000.00
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.10.10.10.20.30.40.30.40.20.30.30.40.40.51.01.01.21.31.41.21.31.41.31.00.80.70.40.50.10.00.10.10.20.10.10.10.20.20.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value1112121112151716179.9259.8939.09210111313121313141113171211
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.92.62.63.03.64.13.84.23.13.22.93.64.34.95.25.25.95.95.95.16.28.16.96.8

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-03-312020-03-312019-03-31
Value1221000.0073000.0
Percentage of AccruedIncomeTaxesCurrent100.00.0100.0
Percentage of Assets0.30.00.0

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value135148141135121117115113107105102101888492867473717061676261555851514453474439393431303132303740
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.235.130.930.728.728.227.326.525.133.232.632.930.530.934.233.831.131.230.129.326.930.528.427.925.526.724.424.221.324.923.223.320.621.519.717.717.618.619.518.221.924.5

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-31
Value22222220181716171616161615
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.34.94.64.44.24.04.13.95.35.15.55.6

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value152162158149138133135132130116117115104971091019590878679807377727464666471656258524843414446485754
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.038.234.733.832.632.132.231.230.636.837.437.336.035.840.439.839.738.336.836.134.836.533.834.933.633.930.730.830.533.532.432.230.728.927.624.024.026.028.129.033.133.4

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312020-09-302020-06-302020-03-31
Value13121313
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0
Percentage of Assets3.02.93.13.2

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation

us-gaap:AccruedLiabilities


Operating
Period End2021-06-302021-03-312020-03-31
Value121213
Percentage of OperatingLeaseLiabilityCurrent0.00.0100.0
Percentage of Assets3.03.03.2
Percentage of Assets us-gaap:AccruedLiabilities0.00.00.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value2251000.02391000.02766000.02599000.02296000.02276000.03293000.02169000.01926000.02018000.03494000.03493000.03088000.03068000.03656000.03137000.03217000.03276000.02466000.02462000.03015000.01269000.0773000.0501000.0360000.0
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.60.60.60.50.50.80.50.50.61.11.11.11.11.31.21.31.41.01.01.40.60.40.30.2

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-03-312018-03-312017-03-31
Value6893000.07205000.07515000.07764000.06294000.04839000.06686000.0
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.61.81.92.01.82.8

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4041828280858787870.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets9.69.918.018.819.020.420.820.520.40.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302020-12-312020-09-30
Value8.8381414
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0
Percentage of Assets2.13.13.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302020-12-312020-09-30
Value7.8331313
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0
Percentage of Assets1.92.92.9

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302020-12-312020-09-30
Value6.051212
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0
Percentage of Assets1.42.82.9

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value535495959398
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets12.712.921.021.722.123.6

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302020-12-312020-09-30
Value58113113
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0
Percentage of Assets13.824.725.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302020-12-312020-09-30
Value4.7781717
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0
Percentage of Assets1.13.84.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value229220209202198189193200203194192190181171160147138138143146140131128127127127130132130126118112114111109119115110109108105999596
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets54.351.945.845.846.645.645.847.147.661.361.361.362.562.558.957.857.758.960.260.861.859.958.657.658.758.561.761.761.859.058.758.359.761.162.866.766.364.266.065.261.260.70.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1921851791751711681661631601551521491461431411381351301231181101051009084
Percentage of StockholdersEquity83.884.485.686.986.589.086.081.678.880.079.378.680.384.088.493.997.998.996.593.999.695.9100.494.287.6
Percentage of Assets45.543.839.239.840.340.639.438.437.549.048.648.250.252.452.154.357.659.256.455.460.861.660.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value615598584572560552540531518505493483470458449439422393364336301275248223197
Percentage of StockholdersEquity268.2271.7278.3283.0283.1291.3279.7264.6254.4259.3256.6254.1258.6267.8280.6297.9304.9298.1285.1265.7270.9249.2249.4233.8205.3
Percentage of Assets145.7141.0127.6129.7132.0132.7128.1124.5121.2158.8157.2155.8161.5167.3165.3172.2179.6178.5166.7156.7165.5160.0151.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-578.631-564.435-553.889-546.204-534.162-531.764-513.668-494.472-475.275-466.156-453.58-442.291-434.475-430.989-430.989-430.989-419.802-391.803-360.278-328.48-301.301-270.574-248.931-218.323-185.762
Percentage of StockholdersEquity-252.1-256.1-263.9-269.9-269.7-280.3-265.6-246.2-233.2-239.3-235.9-232.7-238.9-251.8-269.1-291.8-302.8-296.9-281.6-259.6-270.5-245.1-249.8-228.1-192.9
Percentage of Assets-137.0-132.9-121.0-123.7-125.7-127.7-121.7-115.9-111.1-146.6-144.6-142.7-149.2-157.3-158.5-168.7-178.3-177.9-164.7-153.2-165.2-157.4-151.60.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value192185179175171168166163160155152149146143141138138135135134133130128126124123122121120118116114112110110109107105104103101100
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.543.839.239.840.340.639.438.437.549.048.648.250.252.452.154.357.457.656.956.058.659.258.857.257.756.457.956.757.055.457.459.358.860.862.960.762.161.663.161.858.960.9

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value615598584572560552540531518505493483470458449439431422414407400393386379371364359352344336327319310301294288281275269264256248
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets145.7141.0127.6129.7132.0132.7128.1124.5121.2158.8157.2155.8161.5167.3165.3172.2179.5179.6174.5169.7176.2178.5176.9171.4171.6166.7170.0164.3163.2156.7161.6165.5162.2165.5168.1160.3162.2160.0162.7158.7148.9151.3

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-03-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312012-02-292011-12-312011-09-302011-06-302011-03-31
Value564434430430430430419406396393391387379369360351341334328325321308301294277274270274265258252248
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets132.9149.2157.3158.5168.7179.2178.3171.2164.8173.0177.9177.1171.0170.5164.7166.1159.3158.3153.2160.3166.6161.3165.2168.2154.3158.0157.40.0159.9155.3146.5151.6

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1345000.01494000.01251000.01238000.0995000.0919000.01143000.01198000.01225000.01239000.01023000.0908000.01179000.0782000.0852000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1345000.01494000.01251000.01238000.0995000.0919000.01143000.01198000.01225000.01239000.01023000.0908000.01179000.0782000.0852000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1420342415141920261019252212199.21821171116111910137.647120.694156.872141210
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.514.224.217.711.99.913.413.717.67.113.217.415.28.513.76.815.514.19.814.210.018.49.912.97.312.00.714.86.815.013.911.9

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-6463000.0-3948000.0-6358000.0-3330000.0-3607000.0-4614000.0-10204000.0-9512000.0-8030000.0-4966000.0-3835000.0-3504000.0-2969000.0-11353000.0-4908000.0-6129000.0-5299000.0-3690000.0-3510000.0-5477000.0-5681000.0-2872000.0-2930000.0-3404000.0-6499000.0-5102000.0-4695000.0-6963000.0-4885000.0-5822000.0-3942000.0-5090000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.2-2.7-4.5-2.4-2.8-3.1-6.9-6.5-5.3-3.3-2.6-2.4-2.0-7.9-3.5-4.5-3.9-3.0-2.9-4.6-5.1-2.7-2.8-3.3-6.2-5.0-4.5-6.8-4.9-6.1-4.2-5.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-9051000.0-5774000.0-5158000.0-8795000.0-916000.0-16320000.0-17946000.0-17070000.0-5620000.0-10540000.0-9118000.0-5498000.0-2267000.01257000.01087000.035000.0-9682000.0-2847000.0-11059000.0-6104000.0-6495000.0-16104000.0-2017000.0-2091000.0-4616000.0-5119000.0-5442000.0-2908000.0-5487000.0-9170000.0-4010000.0-4629000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.9-4.0-3.6-6.5-0.7-11.1-12.1-11.6-3.7-7.0-6.2-3.7-1.50.90.80.0-7.0-2.4-9.3-5.2-5.8-15.0-1.9-2.0-4.4-5.0-5.2-2.8-5.5-9.6-4.3-5.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-1.05410221110-6.405-8.292-6.50512-4.776.3516172.178153.1246.398
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.77.516.18.88.4-4.4-5.6-4.48.5-3.24.311.311.71.511.02.34.6

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-336000.0-7505000.0-312000.0-310000.0-249000.02361000.0-285000.0-300000.0-306000.02233000.0-256000.0-227000.0-294000.02898000.0-3213000.0-231000.0-328000.0-560000.0-233000.0-234000.0-193000.0-1065000.0-192000.0-190000.0-209000.0918000.0-164000.0-172000.0-278000.0-1876000.0-290000.0-191000.0-162000.02532000.0-104000.0-32000.0-120000.09724000.0-212000.0-267000.0-194000.01610000.0-176000.0-587000.0-223000.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value5.95.8865.9075.8155.8285.698-0.9328.7838.9675.8885.8215.6425.6335.7625.4735.2375.3035.3315.2075.3595.0515.0444.9924.9714.9454.7334.5444.6014.1174.214.0824.1074.0123.8853.913.5854.3594.113.6263.5913.3963.2243.0783.0862.861
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2705000.01210000.0-9060000.05927000.02899000.02606000.0-7496000.05223000.0-4297000.09161000.0-2518000.0-869000.02497000.02221000.0-1605000.03839000.0203000.04311000.0-661000.0438000.01341000.04131000.0-3149000.02908000.0-323000.01602000.0-3420000.03544000.0312000.02126000.01658000.03699000.01973000.06114000.0-4774000.03119000.0-2565000.03759000.0-4410000.02702000.0465000.05991000.0-31000.0-714000.02173000.0
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1420342415141920261019252212199.21821171116111910137.647120.694156.872141210
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.514.224.217.711.99.913.413.717.67.113.217.415.28.513.76.815.514.19.814.210.018.49.912.97.312.00.714.86.815.013.911.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value161411118.302119.3521213111012118.9589.5698.3938.7757.9877.0496.9527.4916.6676.6918.2676.95.5766.8327.8838.2998.3338.7758.6758.6097.585.9246.636.5965.0735.47.8818.1982.6466.7247.5337.76
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.28.08.76.48.06.38.88.97.87.08.67.86.26.86.26.46.05.55.45.85.25.46.65.44.65.66.46.76.97.27.37.36.85.56.36.34.95.37.58.02.67.18.18.5

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value161411118.302119.3521213111012118.9589.569
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.28.08.76.48.06.38.88.97.87.08.67.86.26.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value161411118.302119.3521213111012118.9589.5698.3938.775
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.010.28.08.76.48.06.38.88.97.87.08.67.86.26.86.26.4

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1345000.01494000.01251000.01238000.0995000.0919000.01143000.01198000.01225000.01239000.01023000.0908000.01179000.0782000.0853000.0607000.0922000.0696000.0608000.0612000.0516000.0590000.0498000.0488000.0616000.0615000.0432000.0445000.0717000.0594000.0676000.0465000.0405000.0347000.0263000.090000.0297000.0406000.0541000.0671000.0658000.0650000.0630000.0674000.0590000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-6463000.0-3948000.0-6358000.0-3330000.0-3607000.0-4614000.0-10204000.0-9512000.0-8030000.0-4966000.0-3835000.0-3504000.0-2969000.0-11353000.0-4908000.0-6129000.0-5299000.0-3690000.0-3510000.0-5477000.0-5681000.0-2872000.0-2930000.0-3404000.0-6499000.0-5102000.0-4695000.0-6963000.0-4885000.0-5822000.0-3942000.0-5090000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.2-2.7-4.5-2.4-2.8-3.1-6.9-6.5-5.3-3.3-2.6-2.4-2.0-7.9-3.5-4.5-3.9-3.0-2.9-4.6-5.1-2.7-2.8-3.3-6.2-5.0-4.5-6.8-4.9-6.1-4.2-5.6

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.4633.9486.3583.333.6074.614109.5128.034.9663.8353.5042.969114.9086.1295.299136.335.5585.2854.8553.8763.3294.6968.0624.9335.2854.5885.6673.693.515.4775.6812.8722.933.4046.4995.0574.6956.9634.8854.5873.9425.09
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-9051000.0-5774000.0-5158000.0-8795000.0-916000.0-16320000.0-17946000.0-17070000.0-5620000.0-10540000.0-9118000.0-5498000.0-2267000.01257000.01087000.035000.0-9682000.0-2847000.0-11059000.0-6104000.0-6495000.0-16104000.0-2017000.0-2091000.0-4616000.0-5119000.0-5442000.0-2908000.0-5487000.0-9170000.0-4010000.0-4629000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-5.9-4.0-3.6-6.5-0.7-11.1-12.1-11.6-3.7-7.0-6.2-3.7-1.50.90.80.0-7.0-2.4-9.3-5.2-5.8-15.0-1.9-2.0-4.4-5.0-5.2-2.8-5.5-9.6-4.3-5.1

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value14107.685122.3981819199.11912117.8163.4860.00.00.01112102.5511.6484.7478.0039.6999.0769.1459.4957.4335.7253.2044.2127.3087.051163.33.6735.3796.2596.3323.6737.828116.3095.469
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value68.564.2862.357.9755.5454.8753.6649.8447.0545.1744.0841.8140.4339.4538.4135.2833.2432.0232.1732.1731.5630.3629.6728.8128.1527.6527.4526.4225.624.822.8520.3919.637.3135.7635.4134.5934.1933.3230.6229.8929.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

crvl:RangeFour


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value105.2589.9787.7984.8387.7687.7687.4975.4767.2859.8158.2354.7753.5952.5852.2945.3545.2144.6143.9143.543.8245.5545.5541.5142.2541.4942.0242.0241.0536.0534.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice153.6140.0140.9146.3158.0159.9163.0151.4143.0132.4132.1131.0132.6133.3136.1128.5136.0139.3136.5135.2138.8150.0153.5144.1150.1150.1153.1159.0160.4145.4149.1

crvl:RangeOne


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value42.3839.739.5837.5534.9931.4131.5829.2927.5627.2225.7825.9125.2224.9625.0420.2920.3320.3920.4520.4520.3219.9419.5117.6616.4915.7516.4114.7514.1212.4812.72
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice61.961.863.564.863.057.258.958.858.660.358.562.062.463.365.257.561.263.763.663.664.465.765.861.358.657.059.855.855.250.355.7

crvl:RangeThree


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value83.0877.6677.669.0768.9768.8368.4258.0558.0255.6347.3744.9944.3841.241.9635.437.2636.6435.934.7834.7840.8840.4133.1933.0229.6531.4526.7425.123.5523.61
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice121.3120.8124.6119.1124.2125.4127.5116.5123.3123.2107.5107.6109.8104.4109.2100.3112.1114.4111.6108.1110.2134.7136.2115.2117.3107.2114.6101.298.095.0103.3

crvl:RangeTwo


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value60.3557.1457.3255.0753.9552.5852.5846.4145.6443.2637.5135.935.3934.4134.5132.6731.7531.4731.3930.7530.7432.731.9923.5623.4522.9423.4522.7922.7221.7421.88
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice88.188.992.095.097.195.898.093.197.095.885.185.987.587.289.892.695.598.397.695.697.4107.7107.881.883.383.085.486.388.887.795.8

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value284218156.6867.9062119
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value2834121015141210
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value418000.01012000.01264000.01472000.01884000.01830000.01989000.01802000.01989000.02644000.0964000.0707000.0700000.0976000.01254000.0869000.0772000.01238000.0991000.01021000.0983000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value489000.0680000.0553000.0236000.00
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.00.0

crvl:AllocatedShareBasedCompensationExpenseAndRecoveries us-gaap:AwardType

crvl:AllocatedShareBasedCompensationExpenseAndRecoveries

us-gaap:PerformanceShares


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value605000.0764000.0513000.0510000.0294000.0212000.0400000.0470000.0543000.0430000.0360000.0270000.0575000.0194000.0230000.013000.0212000.096000.00-31000.0-31000.048000.0-35000.0-63000.079000.0
Percentage of AllocatedShareBasedCompensationExpenseAndRecoveries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

crvl:CommonStockEqualsToPercentageOfOutstandingCommonStock us-gaap:ShareRepurchaseProgram

crvl:CommonStockEqualsToPercentageOfOutstandingCommonStock

crvl:NineteenNinetySixShareRepurchaseProgram


Common
Period End2021-06-302020-12-31
Value67.00
Percentage of CommonStockEqualsToPercentageOfOutstandingCommonStock100.00.0

crvl:ContractWithCustomerLiabilityIncreaseThroughContractsAcquired

crvl:ContractWithCustomerLiabilityIncreaseThroughContractsAcquired


Contract
Period End2021-06-302021-03-312020-12-31
Value8.7529.28310
Percentage of ContractWithCustomerLiabilityIncreaseThroughContractsAcquired100.0100.0100.0

crvl:ContractWithCustomerLiabilityRevenueRecognizedFromAdditions

crvl:ContractWithCustomerLiabilityRevenueRecognizedFromAdditions


Contract
Period End2021-06-302021-03-312020-12-31
Value6.3488.7585.149
Percentage of ContractWithCustomerLiabilityRevenueRecognizedFromAdditions100.0100.0100.0

crvl:IncreaseDecreaseInAccountsAndTaxesPayable

crvl:IncreaseDecreaseInAccountsAndTaxesPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3257000.0-3921000.04185000.0-3308000.0-311000.0-4296000.01002000.0-3477000.07866000.0-3786000.01563000.0-2290000.02538000.0-3454000.01464000.0-5236000.04096000.04072000.0-170000.0-3170000.02618000.01620000.0-3886000.0-1851000.01580000.02597000.0-1015000.0-5252000.0975000.0-185000.01447000.0-2307000.03580000.0-198000.02602000.0135000.0-1725000.02147000.0-3696000.0-1437000.04803000.0-1212000.02101000.0-1713000.0739000.0
Percentage of IncreaseDecreaseInAccountsAndTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:IncreaseDecreaseInOperatingLeaseLiability

crvl:IncreaseDecreaseInOperatingLeaseLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.279-0.931-0.247-0.78-0.186-0.385-7.6420.923120.00.00.00.0
Percentage of IncreaseDecreaseInOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

crvl:LesseeOperatingLeaseCommitmentsNotYetCommenced

crvl:LesseeOperatingLeaseCommitmentsNotYetCommenced


Lessee
Period End2021-06-302021-03-312020-12-31
Value5400000.0-900000.0-1800000.0
Percentage of LesseeOperatingLeaseCommitmentsNotYetCommenced100.0100.0100.0

crvl:ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities

crvl:ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities


Reductions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.929340.538-0.761.6880.14.1812.8061.267
Percentage of ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:ShareholderPlanPercentageOfAcquiredEntity

crvl:ShareholderPlanPercentageOfAcquiredEntity


Shareholder
Period End2021-06-302021-03-312020-12-31
Value15.000
Percentage of ShareholderPlanPercentageOfAcquiredEntity100.00.00.0

crvl:ShareholderPlanPercentageOfMergedEntity

crvl:ShareholderPlanPercentageOfMergedEntity


Shareholder
Period End2021-06-302021-03-312020-12-31
Value50.000
Percentage of ShareholderPlanPercentageOfMergedEntity100.00.00.0

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1101000.01161000.01020000.0983000.0756000.0731000.0872000.0949000.0960000.0937000.0777000.0701000.0901000.0305000.0809000.0422000.0572000.0417000.0375000.0378000.0319000.0341000.0310000.0300000.0382000.0359000.0268000.0276000.0
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-31
Value2822000.0533000.03227000.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value244000.0333000.0231000.0255000.0239000.0188000.0271000.0249000.0265000.0302000.0246000.0207000.0278000.0477000.043000.0185000.0350000.0279000.0234000.0234000.0197000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value25000.026000.026000.026000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnDispositionOfAssets


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value11000.0-36000.0-58000.0-3000.0-493000.0-80000.0-43000.0-2000.0-24000.0-275000.0-68000.0-12000.049000.0-1000.0-748000.0-162000.0-288000.0-309000.0-416000.0-1000.0-7000.0-265000.0-26000.04000.01000.0-62000.0-211000.0-7000.0-5000.09000.0-64000.0-22000.0-1000.0-6000.0-16000.0-382000.0-8000.0-52000.0-42000.0-49000.0-67000.0-33000.0-9000.030000.0-141000.0
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-12.8947.565.559134.5912.261.7825.6832.163.2880.297134.274-8.4326.705111.2931.9931.0369.277-6.025.0190.316.521-2.9866.659-0.256.914-8.386.3562.0815.6020.1684.6732.6661.187-1.347-0.3712.035-7.397-2.5269.5242.3252.792-1.629
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4028000.0-2127000.0-1801000.0119000.0-3698000.0-3039000.0-3830000.01546000.01600000.0-2630000.0-1305000.0-5638000.0-199000.06404000.0
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value377000.0-143000.0-165000.0-63000.0-133000.0-218000.0131000.0-222000.0904000.0-2000.0-18000.0-109000.0-16000.0-308000.0-511000.0452000.0-178000.0-108000.0-76000.0284000.0-71000.0-195000.0140000.0719000.0-148000.0238000.0-60000.0-50000.0-110000.0249000.0-128000.0-106000.0-174000.0327000.0-164000.085000.0-137000.039000.0272000.0-63000.063000.0-88000.0-191000.0193000.0-212000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:IncreaseDecreaseInPrepaidExpense


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value481000.0-4446000.01892000.0394000.0-843000.02225000.01162000.0948000.0-501000.0-1295000.0859000.0-385000.0887000.0-500000.02476000.0228000.0-38000.0-1989000.0732000.0-314000.01582000.0-1763000.0226000.0-213000.0-4992000.06123000.0-1331000.01950000.0-929000.0716000.0659000.0-52000.0-2879000.0-397000.0221000.0-1425000.0-3244000.05461000.0194000.0-51000.0242000.02308000.0532000.0-385000.0-2459000.0
Percentage of IncreaseDecreaseInPrepaidExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value4.0594.1843.7194.3644.0853.9053.9994.3324.663
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.6124.0043.6294.2493.7093.7223.8324.2484.261
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.783.9683.8983.6923.663.7223.8323.6923.746
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value5.1454.4952.5272.991.4821.511.251.8883.4991.7852.1712.0661.2191.0221.0960.5710.7370.4990.110.2561.5021.2081.0160.9060.6190.5730.2850.320.4251.1360.5510.8320.8671.1311.4450.3340.4890.6121.1040.0440.4811.6741.1021.360.592
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockPlans

us-gaap:ProceedsFromStockPlans


Proceeds
Period End2021-03-312020-12-312020-03-312019-12-312019-03-312018-12-312018-03-312017-12-312017-03-312016-12-312016-03-312015-12-312015-03-312014-12-312014-03-312013-12-312013-03-312012-12-312012-03-312011-12-312011-03-312010-12-31
Value277000.00266000.00251000.00235000.0-9000.0218000.00190000.00200000.00185000.00152000.00164000.00157000.00
Percentage of ProceedsFromStockPlans100.00.0100.00.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value170000.067000.0456000.0301000.01197000.03027000.0-2262000.0643000.0198000.0255000.0117000.0190000.01313000.0768000.0904000.0611000.0276000.0651000.0604000.0694000.0386000.0261000.0199000.0593000.0304000.0292000.0653000.0430000.0355000.0289000.0658000.065000.0320000.0386000.0595000.0704000.0438000.0544000.0297000.0689000.0616000.0498000.0852000.0357000.0730000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-06-302021-03-312020-12-31
Value358000.000
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.00.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value59-46.0191.0565.044990.1655.9653.45101
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate


Share
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value34.034.034.00.340.310.310.320.360.390.40.40.40.410.420.420.430.430.440.440.460.460.460.470.470.470.470.470.470.470.470.46
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate


Share
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value0.810.330.210.00360.01660.01540.02330.02960.02850.02780.020.01790.01880.01260.01030.0120.01650.01610.01560.01640.01660.01620.01350.0150.00660.00730.00610.00620.00910.01130.0188
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value72.973.8959.3154.758.987.7448.5551.5251.43-7.840.3740.4539.76-5.3147.1138.3939.990.3537.1739.3335.43-2.1934.6436.2506.45024.2429.320.3921.919.7223.36-1.0644.5845.0542.935.6829.4125.3129.47
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value34.4325.222.3915.1922.2324.921.320.4420.7518.1221.5517.1516.5711.9914.7815.9113.6812.5313.214.2215.8417.6916.713.8910.7-33.8243.2244.1441.08-40.1652.7643.7349.56
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value49.174.0444.8338.6636.150.6744.2833.7238.010.541.7333.530.840.6331.1525.626.670.6925.8620.6122.110.1123.7516.9119.16-0.2715.2718.7517.990.1716.3315.6213.40.5124.924.5525.45-0.3627.5723.5122.85
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302020-12-312020-09-30
Value70.2434.7847.92
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302020-12-312020-09-30
Value73.0263.5464.07
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value119.482.687.6979.4952.691.0677.9387.4970.240.5559.3257.3549.40.0857.7548.3545.930.2332.143.3245.741.0734.7833.1534.67-0.2934.7840.5744.861.9240.2434.7723.4624.5221.6122.0720.54
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:Vesting

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:ShareBasedCompensationAwardTrancheOne


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value25.00024.750.250000.250000.250000.250000.250000.2500
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationAwardTrancheTwo


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value75.00074.250.750000.750000.750000.750000.750000.7500
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage300.00.00.0300.0300.00.00.00.0300.00.00.00.0300.00.00.00.0300.00.00.00.0300.00.00.00.0300.00.00.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value35000.04000.04000.025000.0151000.0141000.0131000.046000.0335000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value277000.00257000.0266000.00239000.0251000.00252000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.0100.00.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value277000.00257000.0266000.00239000.0251000.00252000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.0100.00.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.1454.4952.5272.991.4821.511.251.8883.4991.7852.1722.0661.2181.0221.096
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.1454.4952.5272.991.4821.511.251.8883.4991.7852.1722.0661.2181.0221.096
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockAcquiredAverageCostPerShare


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value119.45.9693.5480.169.27-2.8879.9885.5273.31.9760.5158.5852.3800044.881.5634.3240.1243.181.0535.9132.3734.8726.90.20.1710.36
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:ShareRepurchaseProgram

crvl:NineteenNinetySixShareRepurchaseProgram


Treasury
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value15.740.170.2714.710.440.4513.360.250.1812.430012.360.210.0511.60.160.1911.11
Percentage of TreasuryStockAcquiredAverageCostPerShare13.20.20.321.20.60.518.20.40.323.70.00.027.50.60.126.90.40.631.9

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Treasury
Period End2021-07-012021-01-012020-10-012020-07-012020-01-012019-10-012019-07-012019-04-012019-01-012018-10-012018-07-012017-06-082017-01-012016-10-012016-07-012016-06-102016-01-292015-10-302015-07-312015-01-302014-10-232014-07-232014-06-122014-01-212013-11-042012-12-312012-09-302012-06-30
Value137.5104.6290.1176.1192.878.289.8269.9262.8156.5655.644.4437.2935.5144.1842.7143.4433.0732.3834.9333.2744.9747.0547.8537.75-0.18-1.1645.4
Percentage of TreasuryStockAcquiredAverageCostPerShare0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockSharesAcquired us-gaap:SubsequentEventType

us-gaap:TreasuryStockSharesAcquired

us-gaap:SubsequentEvent


Treasury
Period End2020-07-012020-01-012019-10-012019-07-012019-04-012019-01-012018-10-012018-07-012018-06-082017-06-082017-01-012016-10-012016-07-012016-06-102016-01-292015-10-302015-07-312015-01-302014-10-232014-07-232014-06-12
Value62903.071102.092052.076805.091925.070019.081308.024001.00204260.0113760.061880.06651.026555.042629.099403.0101810.085846.076624.035566.087647.0
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value14107.685122.3981819199.11912117.83.50.012102.61.64.7258.09.79.19.1989.57.45.7
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14107.685122.3981819199.11912117.8163.4860.0
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.299.60.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Treasury
Period End2021-07-012021-05-282021-01-012020-10-012020-07-012020-01-012019-10-012019-07-012019-04-012019-01-012018-10-012018-07-012017-06-082017-01-012016-10-012016-07-012016-06-102016-01-292015-10-302015-07-312015-01-302014-10-232014-07-232014-06-12
Value8.87.43.02.3e-064.8e-066.5997.1996.8986.44.3984.5991.3349.14.2432.1970.2941.11.8523.2873.2963.02.5491.5994.1
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value387000.0150000.060000.064000.0225000.042000.036000.038000.067000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:AccountsAndIncomeTaxesPayable

crvl:AccountsAndIncomeTaxesPayable


Accounts
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value1316111316
Percentage of AccountsAndIncomeTaxesPayable100.0100.0100.0100.0100.0

crvl:AccountsAndTaxesPayable

crvl:AccountsAndTaxesPayable


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value161317131616201923111513151316152016161618131115171513141918181719131311111214171914
Percentage of AccountsAndTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:AccruedOperatingLeaseLiabilities

crvl:AccruedOperatingLeaseLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1212131213131313155.708
Percentage of AccruedOperatingLeaseLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:DeferredTaxAssetsDeferredPayrollTaxes

crvl:DeferredTaxAssetsDeferredPayrollTaxes


Deferred
Period End2021-03-31
Value2693000.0
Percentage of DeferredTaxAssetsDeferredPayrollTaxes100.0

crvl:DeferredTaxLiabilitiesAccruedRevenue

crvl:DeferredTaxLiabilitiesAccruedRevenue


Deferred
Period End2021-03-312020-03-312019-03-312018-03-31
Value1526000.01143000.02354000.00
Percentage of DeferredTaxLiabilitiesAccruedRevenue100.0100.0100.00.0

crvl:DeferredTaxLiabilitiesRightOfUseAsset

crvl:DeferredTaxLiabilitiesRightOfUseAsset


Deferred
Period End2021-03-312020-03-312019-03-31
Value11220.0
Percentage of DeferredTaxLiabilitiesRightOfUseAsset100.0100.00.0

crvl:FutureAccruedIncomeTaxesCurrentIncludedInCurrentPeriod

crvl:FutureAccruedIncomeTaxesCurrentIncludedInCurrentPeriod


Future
Period End2021-03-31
Value696000.0
Percentage of FutureAccruedIncomeTaxesCurrentIncludedInCurrentPeriod100.0

crvl:IncomeTaxesPayableCurrentAndUncertainTaxPositions

crvl:IncomeTaxesPayableCurrentAndUncertainTaxPositions


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-31
Value4936000.01221000.05429000.02029000.03721000.01218000.03247000.03534000.05202000.01553000.05370000.04609000.05618000.01666000.03577000.02130000.08091000.02714000.02042000.02042000.02042000.02192000.0
Percentage of IncomeTaxesPayableCurrentAndUncertainTaxPositions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:LeaseLiability

crvl:LeaseLiability


Lease
Period End2021-03-31
Value54
Percentage of LeaseLiability100.0

crvl:LesseeLeaseLiabilityPaymentDueNextTwelveMonths

crvl:LesseeLeaseLiabilityPaymentDueNextTwelveMonths


Lessee
Period End2021-03-31
Value14
Percentage of LesseeLeaseLiabilityPaymentDueNextTwelveMonths100.0

crvl:LesseeLeaseLiabilityPaymentsDue

crvl:LesseeLeaseLiabilityPaymentsDue


Lessee
Period End2021-03-31
Value61
Percentage of LesseeLeaseLiabilityPaymentsDue100.0

crvl:LesseeLeaseLiabilityPaymentsDueAfterYearFive

crvl:LesseeLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-03-31
Value12
Percentage of LesseeLeaseLiabilityPaymentsDueAfterYearFive100.0

crvl:LesseeLeaseLiabilityPaymentsDueYearFive

crvl:LesseeLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-03-31
Value5858000.0
Percentage of LesseeLeaseLiabilityPaymentsDueYearFive100.0

crvl:LesseeLeaseLiabilityPaymentsDueYearFour

crvl:LesseeLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-03-31
Value7639000.0
Percentage of LesseeLeaseLiabilityPaymentsDueYearFour100.0

crvl:LesseeLeaseLiabilityPaymentsDueYearThree

crvl:LesseeLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-03-31
Value8649000.0
Percentage of LesseeLeaseLiabilityPaymentsDueYearThree100.0

crvl:LesseeLeaseLiabilityPaymentsDueYearTwo

crvl:LesseeLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-03-31
Value12
Percentage of LesseeLeaseLiabilityPaymentsDueYearTwo100.0

crvl:LesseeLeaseLiabilityUndiscountedExcessAmount

crvl:LesseeLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-03-31
Value6405000.0
Percentage of LesseeLeaseLiabilityUndiscountedExcessAmount100.0

crvl:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour

crvl:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour


Lessee
Period End2021-06-302020-12-312020-09-30
Value125451
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour100.0100.0100.0

crvl:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased us-gaap:PlanName

crvl:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased

crvl:EmployeeStockPurchasePlan


Share
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value88.8559.759.5549.7838.833.8132.5240.7122.3
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityPublicFloat

dei:EntityPublicFloat


Entity
Period End2020-09-30
Value784
Percentage of EntityPublicFloat100.0

us-gaap:AccruedProfessionalFeesCurrent

us-gaap:AccruedProfessionalFeesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value6720000.07016000.06443000.07957000.05849000.05919000.05986000.06483000.06282000.08377000.06143000.05814000.05435000.05782000.05682000.04567000.04408000.04551000.04896000.04895000.04692000.05308000.06419000.03463000.03656000.0
Percentage of AccruedProfessionalFeesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value3274000.05133000.05508000.04551000.03001000.01821000.01645000.01745000.02295000.02395000.02588000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value3154000.03274000.03800000.06172000.06133000.05133000.02333000.05608000.05508000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BilledContractReceivables

us-gaap:BilledContractReceivables


Billed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-31
Value515052585151516158
Percentage of BilledContractReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization


Capitalized
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value1201099988786961534741
Percentage of CapitalizedComputerSoftwareAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareNet

us-gaap:CapitalizedComputerSoftwareNet


Capitalized
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value27272727252521191816
Percentage of CapitalizedComputerSoftwareNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-03-31
Value1381391281069483899710491969073555338352832
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerRefundLiabilityCurrent

us-gaap:ContractWithCustomerRefundLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-31
Value525654525248454243454235
Percentage of ContractWithCustomerRefundLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-31
Value949000.0613000.0
Percentage of DeferredIncomeTaxAssetsNet100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value27411715212221191918
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value877000.0938000.01123000.0896000.0740000.0762000.0830000.02222000.0805000.01760000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value2242000.02058000.01833000.01631000.01755000.01245000.01044000.0717000.0925000.01605000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value7908000.05640000.06277000.05703000.09409000.09656000.07547000.06672000.05075000.05123000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value849000.01293000.01422000.01151000.01153000.0696000.0631000.0692000.0918000.0958000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent


Deferred
Period End2021-03-312020-03-312019-03-31
Value14240.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent100.0100.00.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value4820000.04507000.04438000.04169000.05960000.05555000.05217000.04934000.04728000.04256000.0
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value367000.0267000.0242000.0179000.0336000.0434000.0564000.0218000.0495000.0471000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value9.166131011151615141414
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsAssetsCurrent

us-gaap:DepositsAssetsCurrent


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-03-31
Value525654525248454243454241353541393132303124252324181716
Percentage of DepositsAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value36433835252626282023242418151918151417151817181413
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions


Employee
Period End2021-03-31
Value5689000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-03-312020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value6797000.06361000.05926000.05818000.05709000.05595000.05486000.05377000.05282000.05173000.05050000.04941000.04832000.04723000.04614000.04505000.04393000.04279000.04165000.04050000.03936000.03822000.03708000.03592000.03474000.03356000.03238000.03120000.03003000.02885000.02755000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-03-312020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value5836000.05414000.04993000.04888000.04782000.04672000.04566000.04461000.04368000.04262000.04144000.04038000.03933000.03827000.03721000.03616000.03510000.03405000.03299000.03192000.03087000.02982000.02876000.02771000.02665000.02559000.02453000.02348000.02243000.02136000.02031000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization85.985.184.384.083.883.583.283.082.782.482.181.781.481.080.680.379.979.679.278.878.478.077.677.176.776.375.875.374.774.073.7

us-gaap:LicensingAgreements


Finite
Period End2021-03-312020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value186000.0172000.0158000.0155000.0152000.0148000.0145000.0141000.0139000.0136000.0131000.0128000.0124000.0121000.0118000.0114000.0111000.0107000.0104000.0101000.097000.094000.090000.087000.084000.080000.077000.073000.070000.067000.063000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.72.72.72.72.72.62.62.62.62.62.62.62.62.62.62.52.52.52.52.52.52.52.42.42.42.42.42.32.32.32.3

us-gaap:NoncompeteAgreements


Finite
Period End2021-03-312020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0775000.0772000.0767000.0762000.0757000.0752000.0746000.0742000.0734000.0708000.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization11.412.213.113.313.613.914.114.414.715.015.315.716.016.416.817.217.617.918.318.719.119.520.020.421.9

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2021-03-31
Value261000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2021-03-31
Value435000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2021-03-31
Value175000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-03-31
Value384000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-03-31
Value422000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2021-03-31
Value427000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302020-12-312020-09-30
Value121414
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302020-12-312020-09-30
Value103.9897.601
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.83.94.04.00.040.04
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value8.4888.006121010118.7857.6236.6757.1768.4717.6127.9977.117.615.1344.9064.9446.9336.2016.5154.9336.6966.476.683115.5526.8834.9335.8625.1464.4874.5397.4187.8157.8119.019126.8026.6086.6596.417
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value22222220
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage

us-gaap:RevenueRemainingPerformanceObligationPercentage


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value97.098.098.097.0
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0100.0

us-gaap:SelfInsuranceReserveCurrent

us-gaap:SelfInsuranceReserveCurrent


Self
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value3245000.03704000.03319000.03374000.03311000.03248000.03428000.03306000.03560000.03523000.03841000.03642000.03412000.03627000.03571000.03195000.02896000.02835000.02770000.02845000.03095000.03305000.03190000.03425000.03370000.0
Percentage of SelfInsuranceReserveCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value52.3350.9547.1845.8843.0741.3538.7938.2636.2135.7333.5734.0832.9131.7830.930.4228.4627.6327.0926.6925.9824.9323.9123.4822.1221.219.7218.9418.117.3215.71
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

crvl:RangeFour


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value88.2288.2287.4900000057.7548.3546.145.622.8721.7145.3745.0443.9243.2642.645.5545.5543.1543.7443.3340.2940.57025.5925.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice168.6173.2190.70.00.00.00.00.00.0172.0141.9140.1143.574.071.4159.4163.0162.1162.1164.0182.7190.5183.8197.7204.4204.3214.20.0147.7161.7

crvl:RangeOne


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value39.9738.6538.2936.5834.2730.9130.7427.9726.1225.6821.9122.1321.3821.4220.2120.2920.3320.3320.320.1919.8719.3418.7117.1515.6515.1315.5114.213.7112.3912.65
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice76.475.981.279.779.674.879.273.172.171.965.364.965.067.465.466.771.473.674.975.676.577.678.373.070.871.478.775.075.771.580.5

crvl:RangeThree


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value81.3376.4975.4863.0362.6859.8959.3257.157.1557.1546.3944.9544.1341.2242.634.9838.9338.3937.2334.7834.7840.9841.829.2328.2425.9627.826.0524.9224.0623.84
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice155.4150.1160.0137.4145.5144.8152.9149.2157.8159.9138.2131.9134.1129.7137.9115.0136.8138.9137.4130.3133.9164.4174.8124.5127.7122.5141.0137.5137.7138.9151.8

crvl:RangeTwo


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value59.857.9757.755.4853.8651.8350.7245.5444.641.7737.6136.2435.4334.3734.3433.8330.2729.6229.3328.9628.227.7127.123.623.4722.9423.3522.6922.7221.6821.48
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice114.3113.8122.3120.9125.1125.3130.8119.0123.2116.9112.0106.3107.7108.1111.1111.2106.4107.2108.3108.5108.5111.2113.3100.5106.1108.2118.4119.8125.5125.2136.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value55354526
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value51332224
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value69.0652.4553.5147.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-30
Value27212316
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0100.0100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 us-gaap:Range

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

srt:Maximum


Sharebased
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value103.3188.2262.3157.7545.73
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1100.0100.0100.0100.0100.0

srt:Minimum


Sharebased
Period End2021-03-312020-03-312019-03-312018-03-312017-03-31
Value21.8720.0812.7112.7112.71
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance121.222.820.422.027.8

us-gaap:TreasuryStockCommonValue

us-gaap:TreasuryStockCommonValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-31
Value578564553546534531513494475466453442430
Percentage of TreasuryStockCommonValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnbilledReceivablesCurrent


Unbilled
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value1817142122191815141212115.2215.775
Percentage of UnbilledReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value107000.0206000.0216000.0194000.0247000.0212000.0140000.083000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Valuation
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-31
Value3274000.05133000.05508000.04551000.03001000.01821000.0
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType, us-gaap:IncomeStatementLocation
('crvl:TimeBasedOptionsAndPerformanceBasedOptions', None)
Allocated Share Based Compensation Expenseus-gaap: Award Type, us-gaap: Income Statement Location
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components