CRVL


Line plots across dimensions of each concept
Tables

Table of contents


us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic
us-gaap:AwardType

us-gaap:EarningsPerShareDiluted
us-gaap:AwardType

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ProfitLoss

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

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:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:AwardType
crvl:AllocatedShareBasedCompensationExpenseAndRecoveries

crvl:IncreaseDecreaseInAccountsAndTaxesPayable

crvl:IncreaseDecreaseInOperatingLeaseLiability

crvl:ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType, us-gaap:IncomeStatementLocation
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:GainLossOnDispositionOfAssets

us-gaap:IncomeTaxesPaid

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidExpense

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockPlans

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
us-gaap:Vesting
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:ShortTermLeaseCost
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

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

us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementEquityComponents
us-gaap:SubsequentEventType

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

us-gaap:VariableLeaseCost

crvl:AccountsAndIncomeTaxesPayable

crvl:AccountsAndTaxesPayable

crvl:AccruedOperatingLeaseLiabilities

crvl:DeferredTaxAssetsAccruedRent

crvl:DeferredTaxLiabilitiesAccruedRevenue

crvl:DeferredTaxLiabilitiesRightOfUseAsset

crvl:IncomeTaxesPayableCurrentAndUncertainTaxPositions
us-gaap:PlanName
crvl:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased

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:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilitiesNet

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:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LiabilityForUncertainTaxPositionsCurrent

us-gaap:OperatingLeaseLiability

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidTaxes

us-gaap:SelfInsuranceReserveCurrent

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
us-gaap:Range
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

us-gaap:StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased

us-gaap:TreasuryStockCommonShares

us-gaap:TreasuryStockCommonValue

us-gaap:UnbilledReceivablesCurrent

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

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock██████▁▁▁▁▁▁545454545454535353535353NA53NANANA53NANANA53NANANA53NANANA26NANANA26NANANA26NANANA
us-gaap:CommonStockSharesIssued █████████████████████████████▁▁▁▁▁▁▁▁▁5454545454545353535353535353535353535353535353535353535252262626262626262626NANANA
us-gaap:CommonStockSharesOutstanding ▅▅▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▁▁▂▂▂▂▂▂▂1717181818181818181818181818191919191919202020202020202021101011111111111111NANANA
us-gaap:CommonStockSharesAuthorized ████████████████████████████████████▁▁1201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201206060NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 18NA181818NA181919NA191819NA191919NA192020NA202121NA212121NA111111NA111111NA111212
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 17NA181818NA181818NA181818NA191919NA191920NA202020NA202121NA111111NA111111NA111111
us-gaap:EarningsPerShareBasic ▄▇▅██▇▆▇▇▄▅▄▄▄▃▃▃▃▃▄▃▂▂▃▃▃▄▄▃█▅▆▆▄▄▇█▁▆▇▇0.460.650.510.70.720.640.550.680.620.470.510.450.470.420.360.360.380.340.340.420.340.270.330.380.40.40.420.410.40.70.530.590.580.450.470.680.710.229999999999999760.570.640.65
us-gaap:EarningsPerShareDiluted ▄▇▅██▇▆▇▇▅▅▄▄▄▃▃▃▃▃▄▃▂▂▃▃▃▄▄▃█▅▆▆▄▅██▁▆▇▇0.460.640.50.690.710.630.540.670.620.470.50.440.460.420.360.350.380.340.340.410.340.270.330.370.390.390.410.410.40.70.530.580.580.440.470.680.70.229999999999999760.560.620.64
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▅██▇██▇██▇▇▆▆▆▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▃▂▃▂▂▁▁▁129147148146150151146148150143140136137133128128128128123124126122122123124120121119118111107105104104101104102100959391
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService crvl:NetworkSolutionsServices▁▄▃▄▃▅▄▆█445349515054535662NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService crvl:PatientManagementServices▁▅█▆█▆▄▄▂859398959996929187NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold ▆██▇██████▇▇▇▆▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁10311611811411711811611611911611511010810510210210210198971009998989693939291888582818280787674717067
us-gaap:GrossProfit ▄▆▆▇█▇▆▇▇▄▃▃▅▄▃▃▃▄▃▄▄▂▃▃▄▄▄▄▄▂▁▂▂▁▁▃▃▃▂▂▂2630293233322931312725252827252525262526262224252726272726232122232121252525232323
us-gaap:GeneralAndAdministrativeExpense ▄▄▅▄▄▄▄▄▄▄▄▂▃▄▃▃▂▄▃▂▃▂▂▂▃▂▂▂▂▁▁▁▂▂▂▂▂█▂▃▁1515171615161515151515131415141413151413141313121413131212111111121312121221121411
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▂▅▄▇█▇▄▇▆▃▂▄▅▄▃▃▄▂▂▄▃▁▂▄▄1014121617161316151110121412111112101013119101213NANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▄▃▄▄▆▄▄▄▃▁▄▇▆▆▆▆▄▆▇▆▄▄▆▇▆▇█▇▆▆▆▆▄▄▇▇▂▆▂▆23233433320354444345433454565444433551414
us-gaap:ProfitLoss ▁▅▂▇█▅▄▇▅▁▂▁▁81191213111012118988NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▅▇▅▇█▇▆▇▇▅▅▅▅▄▄▄▄▄▄▅▄▃▄▄▅▅▅▅▅▄▃▄▄▃▃▄▅▁▄▄▄811912131110121189887767668656788888756655782677
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁▅▂▇█▅▄▇▅▁▂811912131110121189NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets █████▅▅▅▄▄▄▃▃▃▃▃▃▂▂▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁425416422426427318313309291274271255240235237240227220218221216218211214211214202192191182174179173171165166172164NANANA
us-gaap:Liabilities █████▃▃▃▂▂▂▂▂▁▁▁▁▁▁226226228225224123121119109102111107101969494868890NANA90NANANA87NANANA70NANANA61NANANA64NANANA
us-gaap:LiabilitiesAndStockholdersEquity █████▅▅▅▄▄▄▃▃▃▃▃▃▂▂▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁425416422426427318313309291274271255240235237240227220218221216218211214211214202192191182174179173171165166172164NANANA
us-gaap:StockholdersEquity █▇▇██▇▇▇▇▆▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁19818919320020319419219018117116014713813814314614013112812712712713013213012611811211411110911911511010910810599NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▇▇▆▆▅▄▃▃▂▂▁171168166163160155152149146143141138NA135NANANA130NANANA123NANANA118NANANA110NANANA105NANANA100NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarnings██▇▆▆▅▄▄▃▂▂▁560552540531518505493483470458449439NA422NANANA393NANANA364NANANA336NANANA301NANANA275NANANA248NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent █▇▇███▇▇▆▅▅▄▄▃▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▂▁▁▁▁▁▁22420821021922121521020418316316614813412813513812712312012211611911511911612011110098928791848177808682NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇▆▇██▇▇▇▆▄▄▃▃▃▃▃▃▃▂▂▂▂▃▃▃▃▃▂▂▂▂▂▂▁▁▁▂▁▂▂▁948389971049196907355533835283840363226242725312834343222251920201461081712151611
us-gaap:AccountsReceivableNetCurrent ▇▆▇█▇█▆▆▇▆▆▆▆▆▅▅▅▅▄▅▄▄▄▅▄▄▄▄▃▂▁▂▂▂▂▃▂▂6765667166716265666463656262596060595559565756605757555450494348464946504848NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross NA243NANANA240NANANA230NANANA206NANANA184NANANA175NANANA160NANANA144NANANA138NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType crvl:OfficeEquipmentAndComputersNA66NANANA68NANANA67NANANA65NANANA60NANANA64NANANA64NANANA59NANANA62NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandBuildingsAndImprovementsNA11NANANA5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNA14NANANA13NANANA14NANANA10NANANA9NANANA8NANANA5NANANA4NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNA150NANANA152NANANA142NANANA130NANANA114NANANA101NANANA90NANANA79NANANA71NANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NA167NANANA178NANANA161NANANA143NANANA130NANANA118NANANA109NANANA97NANANA91NANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▅▅▆▆▇▆▆▆▆▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▃▂▂▂▁7475767268616264666963646363585755535354565652525151495050464445464744434238NANANA
us-gaap:Goodwill ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄3636363636363636363636363636363636363636363636363636363636363636363636363636NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▁▁▁▁▁▃▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▄▄▆▆▆▆▆▆▆▆██████22222233333333344444444455555555666666NANANA
us-gaap:OtherAssetsNoncurrent ▁▃▃▃▃▁▁▁▃▃▃▆▆▆██▆▆▆▆▆▃▃▁▁▁▁▁▁▁▁▁▁▁▁01111000111222332222211000000000000NA00NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LiabilitiesCurrent ████▇▆▆▆▆▅▆▅▅▅▄▄▄▄▃▄▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▂▂▂138133135132130116117115104971091019590878679807377727464666471656258524843414446485754NANANA
us-gaap:AccountsPayableCurrent ▄▆█▇█▁▁▁▂▃▄▄▄▄▄▅12151716179991011131312131314NA11NANANA13NANANA17NANANA12NANANA11NANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▄▄█▄▁▄████████▄▄2232123333333322NA3NANANA1NANANA0NANANA0NANANA0NANANANANANANA
us-gaap:AccruedIncomeTaxesCurrent NA0.0NANANA73000.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccruedLiabilitiesCurrent ███▇▇▇▇▆▅▅▆▅▄▄▄▄▃▄▃▃▃▃▃▃▂▃▂▂▂▂▁▁▁▁▁▁▂▂121117115113107105102101888492867473717061676261555851514453474439393431303132303740NANANA
us-gaap:OperatingLeaseLiabilityCurrent ▄▄1313NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▄▁▄▁▁▁▁1817161716161616NA15NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:OperatingLeaseLiabilityNoncurrent ▇████▁80858787870NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity █▇▇██▇▇▇▇▆▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁19818919320020319419219018117116014713813814314614013112812712712713013213012611811211411110911911511010910810599NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▇▇▆▆▅▄▃▃▂▂▁171168166163160155152149146143141138NA135NANANA130NANANA123NANANA118NANANA110NANANA105NANANA100NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:RetainedEarnings██▇▆▆▅▄▄▃▂▂▁560552540531518505493483470458449439NA422NANANA393NANANA364NANANA336NANANA301NANANA275NANANA248NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ███▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁171168166163160155152149146143141138138135135134133130128126124123122121120118116114112110110109107105104103101100NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁560552540531518505493483470458449439431422414407400393386379371364359352344336327319310301294288281275269264256248NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁▁█████▁█▁▁00111110100NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital▁▁█████▁█▁▁00111110100NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▃▅▆█▁▅█▆▂▅▁▆1514192026101925221219921NANANANANANANANANANANANANA171116111910137120156141210
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▂▃▄▆▇██▁▆▅▆-3607000.0-4614000.0-10204000.0-9512000.0-8030000.0-4966000.0-3835000.0-3504000.0-2969000.0-11353000.0-4908000.0-6129000.0-5299000.0NANANANANANANANANANANANANA-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
us-gaap:NetCashProvidedByUsedInFinancingActivities █▁▁▁▆▄▄▆▇███▄0-16-17-17-5-10-9-5-2110-9NANANANANANANANANANANANANA-2-11-6-6-16-2-2-4-5-5-2-5-9-4-4
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▃▅▆█▁▅█▆▂▅▁▆1514192026101925221219921NANANANANANANANANANANANANA171116111910137120156141210
us-gaap:NetIncomeLoss ▅▇▅▇█▇▆▇▇▅▅▅▅▄▄▄▄▄▄▅▄▃▄▄▅▅▅▅▅▄▃▄▄▃▃▄▅▁▄▄▄811912131110121189887767668656788888756655782677
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁▅▂▇█▅▄▇▅▁▂811912131110121189NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▁▅▂▇█▅▄▇▅▁▂▁▁81191213111012118988NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▅▅▁██▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃55088555555555555544444444444333443333332
us-gaap:DeferredIncomeTaxExpenseBenefit ▃▄▃▃▃▄▃▃▃▄▁▃▃▃▃▃▃▂▃▃▃▃▃▃▃▂▃▃▃▄▃▃▃█▃▃▃▃▃▃▃0200020002-3000000-10000000-1000200090001000
us-gaap:ShareBasedCompensation ▁▁█████▁█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁00111110100000000000000000000000000000000
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▂▃▄▆▇██▁▆▅▆-3607000.0-4614000.0-10204000.0-9512000.0-8030000.0-4966000.0-3835000.0-3504000.0-2969000.0-11353000.0-4908000.0-6129000.0-5299000.0NANANANANANANANANANANANANA-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
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▂▆▅▅▂▂▂▁▇▂▄▃█▄▃▃▂▂▂▂▅▂▃▂▃▂▂▃▃▁▁▂▄▃▂▄▂▂▂▃34109843321146513655433484545335522365464435
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities █▁▁▁▆▄▄▆▇███▄0-16-17-17-5-10-9-5-2110-9NANANANANANANANANANANANANA-2-11-6-6-16-2-2-4-5-5-2-5-9-4-4
us-gaap:PaymentsForRepurchaseOfCommonStock ▂███▄▅▅▄▂▁▁▁▅▅▅▂▁▂▄▄▄▄▄▄▃▂▂▅▄▄▇▂▂▃▃▃▂▄▅▃▃2181919912117300011121021489999753412771633566371165
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30

us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-31
Value5454545454545353535353535353535326262625
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
us-gaap:TreasuryStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-31
Value-36-36-36-35-35-35-35-35-34-34-34-34-34-33-32-32-15-14-14-13
Percentage of SharesIssued-66.9-66.9-66.5-66.1-65.8-65.6-65.3-65.1-64.9-64.8-64.9-64.9-64.6-63.4-62.0-60.5-59.3-56.9-55.5-53.4

Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5454545454545353535353535353535353535353535353535353535252262626262626262626
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesOutstanding



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1717181818181818181818181818191919191919202020202020202021101011111111111111
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesAuthorized



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201201206060
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value18181818181919191819191919192020202121212121111111111111111212
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value17181818181818181818191919191920202020202121111111111111111111
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:EarningsPerShareBasic



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.460.650.510.70.720.640.550.680.620.470.510.450.470.420.360.360.380.340.340.420.340.270.330.380.40.40.420.410.40.70.530.590.580.450.470.680.710.229999999999999760.570.640.65
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-0.040.33999999999999997-0.05-0.05-0.050.31-0.04-0.04-0.050.2-0.04-0.02-0.030.13-0.02-0.02-0.020.12000000000000001-0.02-0.02-0.02
Percentage of EarningsPerShareBasic-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 Basic

us-gaap:EarningsPerShareDiluted



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.460.640.50.690.710.630.540.670.620.470.50.440.460.420.360.350.380.340.340.410.340.270.330.370.390.390.410.410.40.70.530.580.580.440.470.680.70.229999999999999760.560.620.64
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-0.040.33999999999999997-0.05-0.05-0.050.29000000000000004-0.04-0.04-0.050.2-0.04-0.02-0.030.13-0.02-0.02-0.020.12000000000000001-0.02-0.01-0.020.11-0.01-0.01
Percentage of EarningsPerShareDiluted-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

Earnings Per Share Diluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value129147148146150151146148150143140136137133128128128128123124126122122123124120121119118111107105104104101104102100959391
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

crvl:NetworkSolutionsServices


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value445349515054535662
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.236.633.634.933.736.336.937.941.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.236.633.634.933.736.336.937.941.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:NetworkSolutionsServices100.0100.0100.0100.0100.0100.0100.0100.0100.0
crvl:PatientManagementServices


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value859398959996929187
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.863.466.465.166.363.763.162.158.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.863.466.465.166.363.763.162.158.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crvl:PatientManagementServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:CostOfGoodsAndServicesSold



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value10311611811411711811611611911611511010810510210210210198971009998989693939291888582818280787674717067
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.579.180.277.777.978.479.978.779.281.181.881.179.179.380.179.880.179.479.678.679.481.480.379.477.777.977.177.177.278.679.778.377.879.479.175.575.074.475.075.174.0

Cost Of Goods And Services Sold

us-gaap:GrossProfit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2630293233322931312725252827252525262526262224252726272726232122232121252525232323
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.520.919.822.322.121.620.121.320.818.918.218.920.920.719.920.219.920.620.421.420.618.619.720.622.322.122.922.922.821.420.321.722.220.620.924.525.025.625.024.926.0

Gross Profit

us-gaap:GeneralAndAdministrativeExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1515171615161515151515131415141413151413141313121413131212111111121312121221121411
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.010.811.511.310.510.910.810.210.610.811.010.010.611.211.011.410.512.311.710.611.811.111.310.311.411.410.910.210.910.610.911.411.612.612.212.012.021.013.015.212.6

General And Administrative Expense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1014121617161316151110121412111112101013119101213
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.410.18.311.111.610.79.311.110.38.17.28.910.39.58.98.89.48.38.710.88.87.48.410.310.9

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

us-gaap:IncomeTaxExpenseBenefit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value23233433320354444345433454565444433551414
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.02.12.02.32.62.92.22.42.41.80.42.73.93.53.43.43.63.13.34.23.42.82.83.94.23.74.75.44.64.03.84.04.23.13.44.94.92.04.91.65.0

Income Tax Expense Benefit

us-gaap:ProfitLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value81191213111012118988
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.48.06.38.88.97.87.08.67.86.26.86.26.4

Profit Loss

us-gaap:NetIncomeLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value811912131110121189887767668656788888756655782677
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.48.06.38.88.97.87.08.67.86.26.86.26.46.05.55.45.85.25.46.65.44.65.66.46.76.97.27.37.36.85.56.36.34.95.37.58.02.67.18.18.5

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value811912131110121189
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.48.06.38.88.97.87.08.67.86.26.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:Assets



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value425416422426427318313309291274271255240235237240227220218221216218211214211214202192191182174179173171165166172164
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Liabilities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value2262262282252241231211191091021111071019694948688909087706164
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets53.454.454.252.952.438.738.738.737.537.541.142.242.341.139.839.238.240.141.441.541.038.935.839.3

Liabilities

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value425416422426427318313309291274271255240235237240227220218221216218211214211214202192191182174179173171165166172164
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value198189193200203194192190181171160147138138143146140131128127127127130132130126118112114111109119115110109108105999596
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.645.645.847.147.661.361.361.362.562.558.957.857.758.960.260.861.859.958.657.658.758.561.761.761.859.058.758.359.761.162.866.766.364.266.065.261.260.70.00.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1711681661631601551521491461431411381351301231181101051009084
Percentage of StockholdersEquity86.589.086.081.678.880.079.378.680.384.088.493.997.998.996.593.999.695.9100.494.287.6
Percentage of Assets40.340.639.438.437.549.048.648.250.252.452.154.357.659.256.455.460.861.660.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value560552540531518505493483470458449439422393364336301275248223197
Percentage of StockholdersEquity283.1291.3279.7264.6254.4259.3256.6254.1258.6267.8280.6297.9304.9298.1285.1265.7270.9249.2249.4233.8205.3
Percentage of Assets132.0132.7128.1124.5121.2158.8157.2155.8161.5167.3165.3172.2179.6178.5166.7156.7165.5160.0151.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:TreasuryStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-534-531-513-494-475-466-453-442-434-430-430-430-419-391-360-328-301-270-248-218-185
Percentage of StockholdersEquity-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-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:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:AssetsCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value22420821021922121521020418316316614813412813513812712312012211611911511911612011110098928791848177808682
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets52.850.249.951.351.867.866.965.962.959.661.258.055.954.757.057.756.355.955.355.454.054.554.655.655.156.454.852.151.350.950.150.748.447.346.848.150.450.1

Assets Current

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-03-31
Value9483899710491969073555338352838403632262427253128343432222519202014610817121516111013
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.120.021.222.924.428.830.829.125.220.419.714.914.612.216.317.015.914.912.111.212.511.714.713.116.216.316.111.513.110.911.911.18.43.86.14.910.27.50.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:AccountsReceivableNetCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value6765667166716265666463656262596060595559565756605757555450494348464946504848
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.915.815.716.715.622.419.921.022.723.723.325.826.126.724.925.226.727.125.626.726.326.326.628.127.126.727.328.226.526.924.827.126.728.727.830.528.329.8

Accounts Receivable Net Current

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value243240230206184175160144138
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets58.475.684.287.883.580.074.979.080.6

us-gaap:PropertyPlantAndEquipmentByType

crvl:OfficeEquipmentAndComputers


Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value666867656064645962
Percentage of PropertyPlantAndEquipmentGross27.328.329.331.632.636.840.241.645.0
Percentage of Assets16.021.424.727.727.329.530.132.936.3
Percentage of Assets crvl:OfficeEquipmentAndComputers0.00.00.00.00.00.00.00.00.0
us-gaap:LandBuildingsAndImprovements


Period End2020-03-312019-03-31
Value115
Percentage of PropertyPlantAndEquipmentGross4.52.4
Percentage of Assets2.71.8
Percentage of Assets us-gaap:LandBuildingsAndImprovements0.00.0
us-gaap:LeaseholdImprovements


Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value141314109854
Percentage of PropertyPlantAndEquipmentGross6.25.66.35.34.94.93.23.4
Percentage of Assets3.64.35.34.64.13.92.42.7
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.0
us-gaap:SoftwareAndSoftwareDevelopmentCosts


Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value150152142130114101907971
Percentage of PropertyPlantAndEquipmentGross62.063.661.963.262.458.356.655.051.4
Percentage of Assets36.248.152.155.552.246.642.443.541.4
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Gross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value1671781611431301181099791
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.256.158.961.159.454.351.053.553.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value7475767268616264666963646363585755535354565652525151495050464445464744434238
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.518.218.216.915.919.520.020.923.025.323.425.126.326.824.523.924.524.224.524.625.925.725.024.524.623.924.525.926.425.525.525.426.827.627.126.024.423.4

Property Plant And Equipment Net

us-gaap:Goodwill



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value3636363636363636363636363636363636363636363636363636363636363636363636363636
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.78.88.78.68.611.611.711.912.613.413.514.415.315.615.515.316.216.716.816.617.016.817.417.217.417.218.119.119.220.221.020.521.221.422.222.121.322.4

Goodwill

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value22222233333333344444444455555555666666
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.70.91.01.01.11.21.31.41.61.61.71.71.81.92.02.02.12.22.32.32.42.42.62.82.93.13.33.33.53.63.83.93.84.1

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value223333333333444444444555555555
Percentage of FiniteLivedIntangibleAssetsNet98.798.598.498.498.398.398.298.298.298.198.198.098.098.098.097.997.797.697.597.497.397.297.096.996.796.696.496.396.295.9
Percentage of Assets0.60.91.01.01.11.21.31.41.51.61.61.71.81.92.02.02.12.12.22.32.32.42.52.72.83.03.23.23.33.4
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:LicensingAgreements


Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value000000000000000000000000000000
Percentage of FiniteLivedIntangibleAssetsNet1.31.51.61.61.71.71.81.81.81.91.92.02.02.02.02.12.12.12.12.22.22.22.22.22.22.22.32.32.32.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:LicensingAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:NoncompeteAgreements


Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value000000000000000000000000
Percentage of FiniteLivedIntangibleAssetsNet0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.20.30.40.50.60.60.81.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncompeteAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:OtherAssetsNoncurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-06-302011-03-31
Value0111100011122233222221100000000000000
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.30.40.30.40.20.30.30.40.40.51.01.01.21.31.41.21.31.41.31.00.80.70.40.50.10.00.10.10.20.10.10.10.20.20.00.0

Other Assets Noncurrent

us-gaap:LiabilitiesCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value138133135132130116117115104971091019590878679807377727464666471656258524843414446485754
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.632.132.231.230.636.837.437.336.035.840.439.839.738.336.836.134.836.533.834.933.633.930.730.830.533.532.432.230.728.927.624.024.026.028.129.033.133.4

Liabilities Current

us-gaap:AccountsPayableCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value121517161799910111313121313141113171211
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.64.13.84.23.13.22.93.64.34.95.25.25.95.95.95.16.28.16.96.8

Accounts Payable Current

us-gaap:OtherAccruedLiabilitiesCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value223212333333332231000
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.80.50.50.61.11.11.11.11.31.21.31.41.01.01.40.60.40.30.2

Other Accrued Liabilities Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-03-312019-03-31
Value0.073000.0
Percentage of AccruedIncomeTaxesCurrent0.0100.0
Percentage of Assets0.00.0

Accrued Income Taxes Current

us-gaap:AccruedLiabilitiesCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value121117115113107105102101888492867473717061676261555851514453474439393431303132303740
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.728.227.326.525.133.232.632.930.530.934.233.831.131.230.129.326.930.528.427.925.526.724.424.221.324.923.223.320.621.519.717.717.618.619.518.221.924.5

Accrued Liabilities Current

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-06-302020-03-31
Value1313
Percentage of OperatingLeaseLiabilityCurrent100.0100.0
Percentage of Assets3.13.2

Operating Lease Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-31
Value181716171616161615
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.44.24.04.13.95.35.15.55.6

Contract With Customer Liability Current

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value80858787870
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0
Percentage of Assets19.020.420.820.520.40.0

Operating Lease Liability Noncurrent

us-gaap:StockholdersEquity



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-312009-03-31
Value198189193200203194192190181171160147138138143146140131128127127127130132130126118112114111109119115110109108105999596
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.645.645.847.147.661.361.361.362.562.558.957.857.758.960.260.861.859.958.657.658.758.561.761.761.859.058.758.359.761.162.866.766.364.266.065.261.260.70.00.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value1711681661631601551521491461431411381351301231181101051009084
Percentage of StockholdersEquity86.589.086.081.678.880.079.378.680.384.088.493.997.998.996.593.999.695.9100.494.287.6
Percentage of Assets40.340.639.438.437.549.048.648.250.252.452.154.357.659.256.455.460.861.660.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value560552540531518505493483470458449439422393364336301275248223197
Percentage of StockholdersEquity283.1291.3279.7264.6254.4259.3256.6254.1258.6267.8280.6297.9304.9298.1285.1265.7270.9249.2249.4233.8205.3
Percentage of Assets132.0132.7128.1124.5121.2158.8157.2155.8161.5167.3165.3172.2179.6178.5166.7156.7165.5160.0151.30.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
us-gaap:TreasuryStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-312010-03-312009-03-31
Value-534-531-513-494-475-466-453-442-434-430-430-430-419-391-360-328-301-270-248-218-185
Percentage of StockholdersEquity-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-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:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value171168166163160155152149146143141138138135135134133130128126124123122121120118116114112110110109107105104103101100
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.340.639.438.437.549.048.648.250.252.452.154.357.457.656.956.058.659.258.857.257.756.457.956.757.055.457.459.358.860.862.960.762.161.663.161.858.960.9

Additional Paid In Capital Common Stock

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value560552540531518505493483470458449439431422414407400393386379371364359352344336327319310301294288281275269264256248
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets132.0132.7128.1124.5121.2158.8157.2155.8161.5167.3165.3172.2179.5179.6174.5169.7176.2178.5176.9171.4171.6166.7170.0164.3163.2156.7161.6165.5162.2165.5168.1160.3162.2160.0162.7158.7148.9151.3

Retained Earnings Accumulated Deficit

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00111110100
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value00111110100
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1514192026101925221219921171116111910137120156141210
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.99.913.413.717.67.113.217.415.28.513.76.815.514.19.814.210.018.49.912.97.312.00.714.86.815.013.911.9

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-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 NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-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 Investing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-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 NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-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

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1514192026101925221219921171116111910137120156141210
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.99.913.413.717.67.113.217.415.28.513.76.815.514.19.814.210.018.49.912.97.312.00.714.86.815.013.911.9

Net Cash Provided By Used In Operating Activities

us-gaap:NetIncomeLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value811912131110121189887767668656788888756655782677
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.48.06.38.88.97.87.08.67.86.26.86.26.46.05.55.45.85.25.46.65.44.65.66.46.76.97.27.37.36.85.56.36.34.95.37.58.02.67.18.18.5

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value811912131110121189
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.48.06.38.88.97.87.08.67.86.26.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:ProfitLoss



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value81191213111012118988
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.48.06.38.88.97.87.08.67.86.26.86.26.4

Profit Loss

us-gaap:DepreciationDepletionAndAmortization



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value55088555555555555544444444444333443333332
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0200020002-3000000-10000000-1000200090001000
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Income Tax Expense Benefit

us-gaap:ShareBasedCompensation



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value00111110100000000000000000000000000000000
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-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 NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-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 Investing Activities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value34109843321146513655433484545335522365464435
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Property Plant And Equipment

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0-16-17-17-5-10-9-5-2110-9-2-11-6-6-16-2-2-4-5-5-2-5-9-4-4
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-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

Net Cash Provided By Used In Financing Activities

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2181919912117300011121021489999753412771633566371165
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-31
Value111011111111111111111111111110000000001
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

crvl:RangeFour


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value000000000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber7.57.54.612.67.516.434.134.730.038.429.336.821.418.020.431.228.15.04.623.821.023.922.624.624.831.524.4
crvl:RangeOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value000000000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber29.525.727.125.726.225.821.423.325.027.428.420.425.428.327.030.432.235.434.825.125.023.927.825.125.020.826.7
crvl:RangeThree


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value000000000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber30.931.432.735.936.627.021.520.624.317.520.822.727.525.726.021.121.818.716.725.626.129.822.123.420.126.625.6
crvl:RangeTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value000000000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber32.135.435.625.929.730.823.021.320.716.721.520.225.828.026.617.217.940.944.025.527.922.427.627.030.021.123.3

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value55.5454.8753.6649.8447.0545.1744.0841.8140.4339.4538.4135.2833.2432.0232.1732.1731.5630.3629.6728.8128.1527.6527.4526.4225.624.822.8520.3919.637.3135.7635.4134.5934.1933.3230.6229.8929.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

crvl:RangeFour


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value87.7687.7687.4975.4767.2859.8158.2354.7753.5952.5852.2945.3545.2144.6143.9143.543.8245.5545.5541.5142.2541.4942.0242.0241.0536.0534.08
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice158.0159.9163.0151.4143.0132.4132.1131.0132.6133.3136.1128.5136.0139.3136.5135.2138.8150.0153.5144.1150.1150.1153.1159.0160.4145.4149.1
crvl:RangeOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value34.9931.4131.5829.2927.5627.2225.7825.9125.2224.9625.0420.2920.3320.3920.4520.4520.3219.9419.5117.6616.4915.7516.4114.7514.1212.4812.72
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice63.057.258.958.858.660.358.562.062.463.365.257.561.263.763.663.664.465.765.861.358.657.059.855.855.250.355.7
crvl:RangeThree


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value68.9768.8368.4258.0558.0255.6347.3744.9944.3841.241.9635.437.2636.6435.934.7834.7840.8840.4133.1933.0229.6531.4526.7425.123.5523.61
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice124.2125.4127.5116.5123.3123.2107.5107.6109.8104.4109.2100.3112.1114.4111.6108.1110.2134.7136.2115.2117.3107.2114.6101.298.095.0103.3
crvl:RangeTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value53.9552.5852.5846.4145.6443.2637.5135.935.3934.4134.5132.6731.7531.4731.3930.7530.7432.731.9923.5623.4522.9423.4522.7922.7221.7421.88
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice97.195.898.093.197.095.885.185.987.587.289.892.695.598.397.695.697.4107.7107.881.883.383.085.486.388.887.795.8

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

us-gaap:DeferredTaxLiabilities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value421815672119
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxAssetsNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value34121015141210
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:UnrecognizedTaxBenefits



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value11111111200001001010
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:DeferredTaxAssetsValuationAllowance



Period End2020-03-312019-03-312018-03-312017-03-31
Value680000.0553000.0236000.00.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.00.0

Deferred Tax Assets Valuation Allowance

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value86909394960
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0

Operating Lease Right Of Use Asset

us-gaap:AwardType

crvl:AllocatedShareBasedCompensationExpenseAndRecoveries

us-gaap:PerformanceShares


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value000000000000000000000
Percentage of AllocatedShareBasedCompensationExpenseAndRecoveries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

crvl:IncreaseDecreaseInAccountsAndTaxesPayable



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0-41-37-31-22-31-5440-321-3-112-1-5001-23020-12-3-14-12-10
Percentage of IncreaseDecreaseInAccountsAndTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:IncreaseDecreaseInOperatingLeaseLiability



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value00-70120000
Percentage of IncreaseDecreaseInOperatingLeaseLiability100.0100.0100.0100.0100.00.00.00.00.0

crvl:ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities



Period End2020-06-302019-06-30
Value11
Percentage of ReductionsToRightOfUseAssetsResultingFromReductionsToOperatingLeaseLiabilities100.0100.0

us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value001111101000000000000000
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:IncomeStatementLocation

crvl:TimeBasedOptionsAndPerformanceBasedOptions, us-gaap:CostOfSales


Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value00000000000000000000
Percentage of AllocatedShareBasedCompensationExpense49.046.343.239.645.549.136.650.767.752.464.264.565.356.664.565.850.546.855.357.3
crvl:TimeBasedOptionsAndPerformanceBasedOptions, us-gaap:GeneralAndAdministrativeExpense


Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value00000000000000000000
Percentage of AllocatedShareBasedCompensationExpense51.053.756.860.454.550.963.449.332.347.635.835.534.743.435.534.249.553.244.742.7

us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value000000000000000000000000
Percentage of AllocatedShareBasedCompensationExpenseNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-09-302014-06-302013-09-302013-06-302011-12-312010-12-31
Value000-150000100000123000-110200
Percentage of CapitalExpendituresIncurredButNotYetPaid0.00.00.0100.0100.00.00.00.00.0100.00.00.00.00.00.0100.0100.0100.00.00.00.0100.0100.00.0100.00.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value10-6-8-612-46161721536
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

crvl:TimeBasedOptionsAndPerformanceBasedOptions


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value00000000000000000
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-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 GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesPaid



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value03370335064504471-31060351007570232005604250
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value22-75-49-2022-13040014-3201-33021316-43-23-4205002
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedLiabilities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4215230134-86111119-6506-2606-86250421-102-7-2922-1
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3-3-311-2-1-506
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-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 IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidExpense



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value02100-10000200-1001-100-46-110000-200-1-35000200-2
Percentage of IncreaseDecreaseInPrepaidExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value131000.0-9000.0273000.0319000.0263000.08000.0226000.0212000.0180000.0-6000.0272000.0207000.0189000.0-1000.0123000.0152000.0182000.03000.0179000.0161000.0186000.0-10000.0187000.0231000.0275000.019000.0320000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost



Period End2020-06-302019-12-312019-09-302019-06-30
Value4344
Percentage of LeaseCost100.0100.0100.0100.0

us-gaap:OperatingLeaseCost



Period End2020-06-302019-12-312019-09-302019-06-30
Value3344
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-06-302019-06-30
Value33
Percentage of OperatingLeasePayments100.0100.0

us-gaap:ProceedsFromStockOptionsExercised



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value11113122111000001110000001000110001001110
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockPlans



Period End2020-03-312019-12-312019-03-312018-12-312018-03-312017-12-312017-03-312016-12-312016-03-312015-12-312015-03-312014-12-312014-03-312013-12-312013-03-312012-12-312012-03-312011-12-312011-03-312010-12-31
Value266000.00.0251000.00.0235000.0-9000.0218000.00.0190000.00.0200000.00.0185000.00.0152000.00.0164000.00.0157000.00.0
Percentage of ProceedsFromStockPlans100.00.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0

us-gaap:ProvisionForDoubtfulAccounts



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value13-200000100000000000000000000000000000000
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-06-302019-06-30
Value99101
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value0.340.310.310.320.360.390.40.40.40.410.420.420.430.430.440.440.460.460.460.470.470.470.470.470.470.470.470.46
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value0.00360.01660.01540.02330.02960.02850.02780.020.01790.01880.01260.01030.0120.01650.01610.01560.01640.01660.01620.01350.0150.00660.00730.00610.00620.00910.01130.0188
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value12421.049102.06975.05223.03651.038292.0808.02877.03747.082780.01420.010958.03685.0108515.03550.02609.09221.088298.015986.018952.00.073661.00.0150.09011.081104.04057.03200.028246.076640.024183.0-4082.089394.033303.0159.0-1625.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value58.987.73999999999999548.5551.5251.43-7.79999999999999740.3740.4539.76-5.30999999999999547.1138.3939.990.350000000000001437.1739.3335.43-2.19000000000000534.6436.250.06.4500000000000030.024.2429.320.38999999999999721.919.7223.36-1.059999999999995244.5845.0542.935.68000000000000329.4125.3129.47
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value45175.029450.0144650.050450.047025.028550.0145150.059800.056800.028650.0154500.073650.077400.033700.0143750.045600.044900.034000.0155275.047300.039700.032750.0122825.048650.037550.058900.0142650.048100.0191900.074750.016650.020550.011150.08800.095050.029550.015675.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue



Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value15.1922.2324.921.320.4420.7518.1221.5517.1516.5711.9914.7815.9113.6812.5313.214.2215.8417.6916.713.8910.7-33.8199999999999943.2244.1441.08-40.1652.7643.7349.56
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value36.150.670000000000001744.2833.7238.010.541.7333.530.840.62999999999999931.1525.626.670.689999999999997725.8620.6122.110.1099999999999994323.7516.9119.16-0.269999999999999615.2718.7517.990.1699999999999999316.3315.6213.40.510000000000001624.924.5525.45-0.3599999999999994327.5723.5122.85
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value52.691.05999999999998877.9387.4970.240.550000000000004359.3257.3549.40.079999999999998357.7548.3545.930.2300000000000039832.143.3245.741.070000000000000334.7833.1534.67-0.2899999999999991534.7840.5744.861.920000000000001740.2434.7723.4624.5221.6122.0720.54
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit

crvl:RangeFour


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value77.940.018.610.059.338.3500000000000013.2999999999999970.2000000000000028445.91-0.69000000000000486.850000000000001-4.43999999999999843.150.32999999999999834.4799999999999970.035.770.010.079999999999998-0.99000000000000235.780.00.009999999999998015.529.28-0.0299999999999975841.28999999999999910.023.360.70000000000000280.00.046.01
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.0
crvl:RangeOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value20.080.00.07.36999999999999712.710.00.00.012.710.00.00.012.710.00.03.669.050.00.01.27000000000000057.780.00.00.07.780.00.00.07.780.00.00.015.55
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit25.80.00.00.021.40.00.00.027.7-0.00.0-0.029.50.00.00.025.30.00.0-128.321.70.00.00.026.6-0.00.00.033.30.00.00.033.8
crvl:RangeThree


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value57.760.08.3500000000000010.049.415.0300000000000012.750.329999999999998340.250.00.10999999999999943-0.1000000000000014234.780.00.00.034.780.010.140.399999999999998624.25-1.14000000000000061.14000000000000060.023.110.00.089999999999999860.910000000000000122.084.9600000000000010.04.2330.98
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit74.10.044.90.083.360.283.3165.087.7-0.01.62.380.60.00.00.097.20.0100.6-40.467.80.011400.00.078.9-0.07.00.094.5708.60.00.067.3
crvl:RangeTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value45.910.04.6199999999999973.920000000000001734.792.57000000000000030.00.032.110.02.82999999999999836.17000000000000223.110.00.00.023.110.00.099999999999997870.930000000000003322.08-0.19999999999999930.45999999999999731.070000000000000320.550.03.27999999999999940.015.011.03000000000000110.39999999999999860.320000000000000325.11
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit58.90.024.80.058.630.80.00.069.9-0.041.3-139.053.60.00.00.064.60.01.0-93.961.70.04600.019.570.2-0.0254.30.064.3147.10.00.054.6

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit

crvl:RangeFour


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value88.220.7300000000000040.017.2570.242.9900000000000021.57000000000000030.057.750.09.3999999999999992.2546.1-0.470000000000005970.00.046.20.00.00.045.550.00.00.045.555.3099999999999955.4699999999999995.500000000000003629.270.00.00.052.76
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit100.0100.00.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.0100.0100.0100.0100.00.00.00.0100.0
crvl:RangeOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value45.90.04.6199999999999973.920000000000001734.782.57000000000000030.00.032.10.02.8300000000000026.16999999999999823.10.00.00.023.10.00.100000000000001420.929999999999999722.07-0.19999999999999930.460000000000000851.070000000000000320.540.03.2800000000000010.015.01.03000000000000110.39999999999999860.320000000000000325.1
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit52.00.00.022.749.586.00.00.055.60.030.1274.250.1-0.00.00.050.00.00.00.048.50.00.00.045.10.060.00.051.20.00.00.047.6
crvl:RangeThree


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value77.930.018.6100000000000070.059.328.3500000000000013.2999999999999970.2000000000000028445.9-0.68999999999999776.849999999999994-4.43999999999999843.140.32999999999999834.4800000000000040.035.760.010.079999999999998-0.99000000000000235.770.00.009999999999998015.500000000000003629.27-0.0300000000000011371.28999999999999910.023.350.70000000000000280.00.046.0
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit88.30.00.00.084.5279.3210.20.079.50.072.9-197.393.6-70.20.00.077.40.00.00.078.50.00.00.064.3-0.623.60.079.80.00.00.087.2
crvl:RangeTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value57.750.08.3500000000000010.049.45.0300000000000012.750.329999999999998340.240.00.10999999999999943-0.1000000000000014234.770.00.00.034.770.010.140.4000000000000021324.24-1.1399999999999971.1399999999999970.023.10.00.089999999999999860.910000000000000122.074.9599999999999940.04.23000000000000430.97
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit65.50.00.00.070.3168.2175.20.069.70.01.2-4.475.4-0.00.00.075.30.00.00.053.20.00.00.050.70.01.616.575.40.00.00.058.7

us-gaap:Vesting

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:ShareBasedCompensationAwardTrancheOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.250.00.00.00.250.00.00.00.250.00.00.00.250.00.00.00.250.00.00.00.250.00.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0
us-gaap:ShareBasedCompensationAwardTrancheTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.750.00.00.00.750.00.00.00.750.00.00.00.750.00.00.00.750.00.00.00.750.00.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage300.00.00.00.0300.00.00.00.0300.00.00.00.0300.00.00.00.0300.00.00.00.0300.00.00.0

us-gaap:ShortTermLeaseCost



Period End2020-06-302019-12-312019-09-302019-06-30
Value151000.0131000.046000.0335000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:CommonStock


Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-03-31
Value0000000
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans100.00.0100.0100.00.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value42255.044673.028225.055993.096183.049327.060230.063665.045553.042226.041095.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value44363.050759.028225.055993.0100955.053374.076122.066870.054238.051302.051712.0145911.065921.020120.04256.014593.076623.061035.044077.059804.035837.033074.021734.030957.025993.0122402.069276.053279.064976.043428.028938.072212.0131146.063725.054366.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value266000.00.0239000.0251000.00.0252000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value266000.00.0239000.0251000.00.0252000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.00.0100.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11113122111
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11113122111
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value69.27-2.879999999999995579.9885.5273.31.969999999999998960.5158.5852.380.00.00.044.881.560000000000002334.3240.1243.181.050000000000004335.9132.3734.8726.9000000000000020.200000000000001070.1699999999999999310.36
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

crvl:NineteenNinetySixShareRepurchaseProgram


Period End2020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value14.710.43999999999999950.4500000000000010713.360.250.1799999999999997212.430.00.012.360.209999999999999080.0500000000000007111.60.160000000000000140.1900000000000012811.11
Percentage of TreasuryStockAcquiredAverageCostPerShare21.20.60.518.20.40.323.70.00.027.50.60.126.90.40.631.9

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Period End2020-07-012020-01-012019-10-012019-07-012019-04-012019-01-012018-10-012018-07-012017-06-082017-01-012016-10-012016-07-012016-06-102016-01-292015-10-302015-07-312015-01-302014-10-232014-07-232014-06-122014-01-212013-11-042012-12-312012-09-302012-06-30
Value76.1192.878.289.8269.9262.8156.5655.644.4437.2935.5144.1842.7143.4433.0732.3834.9333.2744.9747.0547.8537.75-0.17999999999999972-1.159999999999996645.4
Percentage of TreasuryStockAcquiredAverageCostPerShare0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockSharesAcquired



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000000000000000000000000
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0000000000
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


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
Value000000000000000000000
Percentage of TreasuryStockSharesAcquired0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value21819199121173012102148999975
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value218191991211730
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.299.60.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Period End2020-07-012020-01-012019-10-012019-07-012019-04-012019-01-012018-10-012018-07-012017-06-082017-01-012016-10-012016-07-012016-06-102016-01-292015-10-302015-07-312015-01-302014-10-232014-07-232014-06-12
Value06766441942011333214
Percentage of TreasuryStockValueAcquiredCostMethod0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:VariableLeaseCost



Period End2020-06-302019-12-312019-09-302019-06-30
Value225000.036000.038000.067000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0

crvl:AccountsAndIncomeTaxesPayable



Period End2020-03-312019-03-312018-03-312017-03-31
Value16111316
Percentage of AccountsAndIncomeTaxesPayable100.0100.0100.0100.0

crvl:AccountsAndTaxesPayable



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1616201923111513151316152016161618131115171513141918181719131311111214171914
Percentage of AccountsAndTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crvl:AccruedOperatingLeaseLiabilities



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13131313155
Percentage of AccruedOperatingLeaseLiabilities100.0100.0100.0100.0100.0100.0

crvl:DeferredTaxAssetsAccruedRent



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value0112121
Percentage of DeferredTaxAssetsAccruedRent0.0100.0100.0100.0100.0100.0100.0

crvl:DeferredTaxLiabilitiesAccruedRevenue



Period End2020-03-312019-03-312018-03-31
Value120
Percentage of DeferredTaxLiabilitiesAccruedRevenue100.0100.00.0

crvl:DeferredTaxLiabilitiesRightOfUseAsset



Period End2020-03-312019-03-31
Value220
Percentage of DeferredTaxLiabilitiesRightOfUseAsset100.00.0

crvl:IncomeTaxesPayableCurrentAndUncertainTaxPositions



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-31
Value313351545132822222
Percentage of IncomeTaxesPayableCurrentAndUncertainTaxPositions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PlanName

crvl:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased

crvl:EmployeeStockPurchasePlan


Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-31
Value59.759.5549.7838.833.8132.5240.7122.3
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareAveragePriceOfSharesPurchased100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedProfessionalFeesCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value555668655554444445633
Percentage of AccruedProfessionalFeesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-312011-03-31
Value5543111222
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-03-31
Value65255
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0

us-gaap:BilledContractReceivables



Period End2020-06-302020-03-312019-12-312019-09-302019-03-31
Value5151516158
Percentage of BilledContractReceivables100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareAccumulatedAmortization



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value1099988786961534741
Percentage of CapitalizedComputerSoftwareAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareNet



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value272727252521191816
Percentage of CapitalizedComputerSoftwareNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-03-31
Value9483899710491969073555338352832
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerRefundLiabilityCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-31
Value5248454243454235
Percentage of ContractWithCustomerRefundLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value411715212221191918
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-06-302020-03-312019-03-312018-03-312017-03-31
Value77646
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value010000201
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value211111001
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value565997655
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value111100000
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent



Period End2020-03-312019-03-31
Value240
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent100.00.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value444555444
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value267000.0242000.0179000.0336000.0434000.0564000.0218000.0495000.0471000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value131011151615141414
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepositsAssetsCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-03-31
Value5248454243454241353541393132303124252324181716
Percentage of DepositsAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value252626282023242418151918151417151817181413
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value655555555544444444433333333322
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value544444444443333333332222222222
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization85.184.384.083.883.583.283.082.782.482.181.781.481.080.680.379.979.679.278.878.478.077.677.176.776.375.875.374.774.073.7
us-gaap:LicensingAgreements


Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value000000000000000000000000000000
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization2.72.72.72.72.62.62.62.62.62.62.62.62.62.62.52.52.52.52.52.52.52.42.42.42.42.42.32.32.32.3
us-gaap:NoncompeteAgreements


Period End2020-03-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-03-31
Value000000000000000000000000
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization12.213.113.313.613.914.114.414.715.015.315.716.016.416.817.217.617.918.318.719.119.520.020.421.9

us-gaap:LiabilityForUncertainTaxPositionsCurrent



Period End2020-03-312019-03-312018-03-312017-03-31
Value1112
Percentage of LiabilityForUncertainTaxPositionsCurrent100.0100.0100.0100.0

us-gaap:OperatingLeaseLiability



Period End2020-06-302020-03-31
Value9398
Percentage of OperatingLeaseLiability100.0100.0

us-gaap:PrepaidExpenseCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value101187678777754466646661156455447779126666
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidTaxes



Period End2020-03-312019-03-312018-03-312016-03-312015-03-312014-03-312013-03-31
Value3110512
Percentage of PrepaidTaxes100.0100.0100.0100.0100.0100.0100.0

us-gaap:SelfInsuranceReserveCurrent



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-03-312013-03-312012-03-31
Value333333333333222233333
Percentage of SelfInsuranceReserveCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value459763.0468107.0381646.0377145.0379869.0440386.0377905.0419729.0432433.0445387.0430321.0451320.0558719.0585424.0568058.0534656.0493994.0529691.0554718.0563790.0563591.0559168.0514993.0502676.0471320.0430294.0467790.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

crvl:RangeFour


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.00.00.00.00.00.07506.018041.02708.057598.013282.0140320.076720.072542.083317.0103684.090554.029054.025914.062775.042613.027223.09539.01300.00.036819.019733.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber0.00.00.00.00.00.02.04.30.612.93.131.113.712.414.719.418.35.54.711.17.64.91.90.30.08.64.2
crvl:RangeOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value274388.0247798.0230010.0190458.0201204.0209084.0149203.0152634.0170635.0195387.0197354.0217809.0292576.0317225.0315888.0304139.0293659.0326460.0344963.0255802.0252127.0251199.0294176.0262773.0262051.0228079.0318009.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber59.752.960.350.553.047.539.536.439.543.945.948.352.454.255.656.959.461.662.245.444.744.957.152.355.653.068.0
crvl:RangeThree


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value46683.034700.05009.051840.042247.045910.075581.0118156.0147001.0106502.0140076.056847.085645.075579.046335.08390.07260.056191.044084.063311.071783.0143601.061690.096052.083809.041232.012792.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber10.27.41.313.711.110.420.028.234.023.932.612.615.312.98.21.61.510.67.911.212.725.712.019.117.89.62.7
crvl:RangeTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value138692.0185609.0146627.0134847.0136418.0185392.0145615.0130898.0112089.085900.079609.036344.0103778.0120078.0122518.0118443.0102521.0117986.0139757.0181902.0197068.0137145.0149588.0142551.0125460.0124164.0117256.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber30.239.738.435.835.942.138.531.225.919.318.58.118.620.521.622.220.822.325.232.335.024.529.028.426.628.925.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value43.0741.3538.7938.2636.2135.7333.5734.0832.9131.7830.930.4228.4627.6327.0926.6925.9824.9323.9123.4822.1221.219.7218.9418.117.3215.71
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

crvl:RangeFour


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.00.00.00.00.00.057.7548.3546.145.622.8721.7145.3745.0443.9243.2642.645.5545.5543.1543.7443.3340.2940.570.025.5925.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice0.00.00.00.00.00.0172.0141.9140.1143.574.071.4159.4163.0162.1162.1164.0182.7190.5183.8197.7204.4204.3214.20.0147.7161.7
crvl:RangeOne


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value34.2730.9130.7427.9726.1225.6821.9122.1321.3821.4220.2120.2920.3320.3320.320.1919.8719.3418.7117.1515.6515.1315.5114.213.7112.3912.65
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice79.674.879.273.172.171.965.364.965.067.465.466.771.473.674.975.676.577.678.373.070.871.478.775.075.771.580.5
crvl:RangeThree


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value62.6859.8959.3257.157.1557.1546.3944.9544.1341.2242.634.9838.9338.3937.2334.7834.7840.9841.829.2328.2425.9627.826.0524.9224.0623.84
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice145.5144.8152.9149.2157.8159.9138.2131.9134.1129.7137.9115.0136.8138.9137.4130.3133.9164.4174.8124.5127.7122.5141.0137.5137.7138.9151.8
crvl:RangeTwo


Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value53.8651.8350.7245.5444.641.7737.6136.2435.4334.3734.3433.8330.2729.6229.3328.9628.227.7127.123.623.4722.9423.3522.6922.7221.6821.48
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice125.1125.3130.8119.0123.2116.9112.0106.3107.7108.1111.1111.2106.4107.2108.3108.5108.5111.2113.3100.5106.1108.2118.4119.8125.5125.2136.7

us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-03-31
Value468107.0440386.0445387.0585424.0529691.0559168.0430294.0512972.0516511.0278962.0302608.0317603.0325797.0388154.0374141.0
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

srt:Maximum


Period End2020-03-312019-03-312018-03-312017-03-31
Value88.2262.3157.7545.73
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1100.0100.0100.0100.0
srt:Minimum


Period End2020-03-312019-03-312018-03-312017-03-31
Value20.0812.7112.7112.71
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance122.820.422.027.8

us-gaap:StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased



Period End2020-06-302019-12-312019-09-302019-06-302019-03-312019-02-282018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312017-02-282016-12-312016-09-302016-06-302015-12-312015-11-302015-10-31
Value373737373713636363636363636135353535134
Percentage of StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockCommonShares



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-31
Value363636353535353534
Percentage of TreasuryStockCommonShares100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockCommonValue



Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-31
Value534531513494475466453442430
Percentage of TreasuryStockCommonValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnbilledReceivablesCurrent



Period End2020-06-302020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-312013-03-312012-03-31
Value221918151412121155
Percentage of UnbilledReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued



Period End2020-03-312019-03-312018-03-312017-03-312016-03-312015-03-312014-03-31
Value206000.0216000.0194000.0247000.0212000.0140000.083000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value55431
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:SharesIssued
us-gaap:StatementEquityComponents
(None,)

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)