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Stockholders' Equity Stockholders' Equity (Narrative) (Details) (USD $) | 3 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2014 dividend | Dec. 31, 2013 | Dec. 31, 2012 | Jun. 30, 2012 | Jun. 30, 2013 | Jan. 03, 2014 | Sep. 30, 2012 D | May 21, 2014 director | Mar. 05, 2012 | May 23, 2012 | May 22, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized under stock based compensation plans |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized | 2,850,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Stock options awarded (in shares) |  |  |  |  | 804,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross | 563,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross | 96,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross |  |  |  |  |  |  |  |
Grants, weighted average exercise price |  |  |  |  | $ 20.20 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice | $ 16.73 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice | $ 5.94 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice |  |  |  |  |  |  |  |
Shares purchased through Employee Stock Purchase Plan (in shares) |  |  |  |  | 55,877 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans | 76,272 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans | 100,620 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans |  |  |  |  |  |  |  |
Weighted average purchase price of ESPP shares purchased during the period (in dollars per share) |  |  |  |  | $ 15.50 csv_EmployeeStockPurchasePlanWeightedAveragePurchasePriceOfSharesPurchased | $ 11.89 csv_EmployeeStockPurchasePlanWeightedAveragePurchasePriceOfSharesPurchased | $ 4.92 csv_EmployeeStockPurchasePlanWeightedAveragePurchasePriceOfSharesPurchased |  |  |  |  |  |  |  |
Payments for buy back of common stock |  |  |  |  | $ 0 us-gaap_PaymentsForRepurchaseOfCommonStock | $ 0 us-gaap_PaymentsForRepurchaseOfCommonStock | $ 4,531,000 us-gaap_PaymentsForRepurchaseOfCommonStock |  |  |  |  |  |  |  |
Directors fees approved under new Directors Compensation Policy, other committee members and chairs |  |  |  |  |  |  |  |  |  |  |  |  | 2,000 csv_DirectorsCompensationEachIndependentDirectorEachMeeting |  |
Directors fees approved under new Directors Compensation Policy |  |  |  |  |  |  |  |  |  |  |  |  | 1,600 csv_DirectorsCompensationOtherMembersAndChaimenEachMeeting |  |
Number of quarterly dividend declarations |  |  |  |  | 4 csv_NumberofDividendsDeclared |  |  |  |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.025 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.025 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.025 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.025 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.10 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.10 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.10 us-gaap_CommonStockDividendsPerShareDeclared |  |  |  |  |  |  |  |
Dividends declared, common stock, amount |  |  |  |  | 1,800,000 us-gaap_DividendsCommonStockCash |  |  |  |  |  |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options awarded (in shares) |  | 15,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 6,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 457,700 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  | 562,500 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 96,283 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |
Grants, weighted average exercise price |  | $ 18.86 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | $ 17.00 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | $ 20.26 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |  |  |  |
Incremental award vesting percentage |  | 25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 25.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 33.33%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |  |  |  |
Award vesting period (in years) |  | 4 years | 4 years | 3 years |  |  |  |  |  |  |  |  |  |  |
Stock option, contracted term |  | 6 years | 6 years | 5 years |  |  |  |  |  |  |  |  |  |  |
Value of stock options granted |  | 100,000 csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 100,000 csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 3,900,000 csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  | 2,300,000 csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 200,000 csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |
Intrinsic value of outstanding stock options | 5,365,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  | 5,365,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |  |  |
Intrinsic value of exercisable stock options | 3,287,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  | 3,287,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |  |  |
Total intrinsic value of options exercised |  |  |  |  | 1,000,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 260,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |
Total fair value of stock options vested |  |  |  |  | 752,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 224,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 142,000 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |
Share based compensation expense |  |  |  |  | 1,594,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 797,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 218,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |
Unrecognized share based compensation cost | 3,400,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  | 3,400,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |  |  |  |  |  |  |  |  |  |
Unrecognized share based compensation, expected term (in years) |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |
Employee Stock Option | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual term of all options granted |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |
Employee Stock Option | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual term of all options granted |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense |  |  |  |  | 260,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = csv_EmployeeStockPurchasePlanMember | 277,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = csv_EmployeeStockPurchasePlanMember | 135,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = csv_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |  |
Purchase price percentage of grant date price per share (as a percent) |  |  |  |  | 85.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent / us-gaap_AwardTypeAxis = csv_EmployeeStockPurchasePlanMember |  |  |  |  |  |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense |  |  |  |  | 1,800,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember | 1,700,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember | 1,400,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  |  |  |  |  |
Unrecognized share based compensation cost | 5,300,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  | 5,300,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |  |  |  |  |  |  |  |  |  |
Unrecognized share based compensation, expected term (in years) |  |  |  |  | 2 years 2 months 12 days |  |  |  |  |  |  |  |  |  |
Restricted Stock | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period (in years) |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |
Vesting percentage per period |  |  |  |  | 33.33%csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsAnnualVestingPercentage / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |  |  |  |
Restricted Stock | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period (in years) |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |
Vesting percentage per period |  |  |  |  | 25.00%csv_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsAnnualVestingPercentage / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Award vesting period (in years) |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |
Awards granted |  |  |  |  | 200,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  | 200,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |  |  |  |
Awards granted, aggregate grant date market value |  |  |  |  |  |  |  |  | 4,100,000 csv_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsinPeriodAggregateGrantDateMarketValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |  |  |
Performance Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance-based stock awards, purchase price, variable option, basis spread over common stock market price (in dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 0.50 csv_SharebasedCompensationArrangementbySharebasedPaymentAwardPurchasePriceVariableOptionBasisSpreadOverCommonStockMarketPrice / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |
Performance-based stock awards, purchase price, fixed option (in dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 9.00 csv_ShareBasedCompensationArrangementByShareBasedAwardPerformanceSharesPurchasePriceFixedOption / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |
Performance-based stock awards, vesting requirement, common stock market price (in dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 21.50 csv_SharebasedCompensationArrangementbySharebasedPaymentAwardVestingRequirementCommonStockMarketPrice / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |
Performance-based stock awards, vesting requirement, common stock market price, days achieved |  |  |  |  |  |  |  |  |  |  | 3 csv_SharebasedCompensationArrangementbySharebasedPaymentAwardVestingRequirementCommonStockMarketPriceTerm / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |
Performance-based stock awards, vesting requirement, period to achieve common stock market price |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |
Performance-based stock awards, surrender of awards, base repurchase price (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 19.00 csv_SharebasedCompensationArrangementbySharebasedPaymentAwardSurrenderofAwardsBaseRepurchasePrice / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |  |
Payments for buy back of common stock |  |  |  |  | 16,200,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |  |  |  |  |  |  |
Executives | Employee Stock Option |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options awarded (in shares) |  |  |  | 300,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = csv_ExecutivesMember |  |  |  |  |  |  |  |  |  |  |
Grants, weighted average exercise price |  |  |  | $ 20.49 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = csv_ExecutivesMember |  |  |  |  |  |  |  |  |  |  |
Number of executives |  |  |  | 3 csv_NumberofExecutives / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = csv_ExecutivesMember |  |  |  |  |  |  |  |  |  |  |
New Employee | Employee Stock Option |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options awarded (in shares) |  |  | 25,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = csv_NewEmployeeMember |  |  |  |  |  |  |  |  |  |  |  |
Grants, weighted average exercise price |  |  | $ 17.21 us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / us-gaap_TitleOfIndividualAxis = csv_NewEmployeeMember |  |  |  |  |  |  |  |  |  |  |  |
Board of Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock issued (in shares) |  |  |  |  |  |  |  |  |  |  |  | 13,233 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_TitleOfIndividualAxis = csv_BoardofDirectorsMember |  |  |
Number of directors |  |  |  |  |  |  |  |  |  |  |  | 3 csv_NumberofDirectors / us-gaap_TitleOfIndividualAxis = csv_BoardofDirectorsMember |  |  |
Directors compensation expense |  |  |  |  | 800,000 csv_DirectorsCompensationExpense / us-gaap_TitleOfIndividualAxis = csv_BoardofDirectorsMember |  |  |  |  |  |  |  |  |  |
Board of Directors | Performance Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for buy back of common stock |  |  |  |  | 3,200,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_TitleOfIndividualAxis = csv_BoardofDirectorsMember |  |  |  |  |  |  |  |  |  |
Audit Committee Chairman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Director compensation, annual cash retainer |  |  |  |  |  |  |  |  |  |  |  |  | 17,500 csv_DirectorCompensationAnnualCashRetainer / us-gaap_TitleOfIndividualAxis = csv_AuditCommitteeChairmanMember |  |
Compensation And Corporate Governance Committee Chairman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Director compensation, annual cash retainer |  |  |  |  |  |  |  |  |  |  |  |  | 15,000 csv_DirectorCompensationAnnualCashRetainer / us-gaap_TitleOfIndividualAxis = csv_CompensationAndCorporateGovernanceCommitteeChairmanMember |  |
Board of Directors Chairman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Director compensation, annual cash retainer |  |  |  |  |  |  |  |  |  |  |  |  | 115,000 csv_DirectorCompensationAnnualCashRetainer / us-gaap_TitleOfIndividualAxis = us-gaap_BoardOfDirectorsChairmanMember |  |
Director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Director compensation, annual cash retainer |  |  |  |  |  |  |  |  |  |  |  |  | 40,000 csv_DirectorCompensationAnnualCashRetainer / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |  |
Director compensation, annual equity retainer |  |  |  |  |  |  |  |  |  |  |  |  | $ 75,000 csv_DirectorCompensationAnnualEquityRetainer / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |  |

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- Definition Director Compensation, Annual Cash Retainer + References No definition available. + Details
Name: | csv_DirectorCompensationAnnualCashRetainer
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Director Compensation, Annual Equity Retainer + References No definition available. + Details
Name: | csv_DirectorCompensationAnnualEquityRetainer
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Annual cash retainer approved to be paid to each independent director for each regular or special meeting. + References No definition available. + Details
Name: | csv_DirectorsCompensationEachIndependentDirectorEachMeeting
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Pre tax compensation expense related to director fees, annual retainers, and deferred compensation amortization. + References No definition available. + Details
Name: | csv_DirectorsCompensationExpense
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Annual cash retainer approved to be paid to other committee members and chairment for each regular or special meeting. + References No definition available. + Details
Name: | csv_DirectorsCompensationOtherMembersAndChaimenEachMeeting
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Weighted average purchase price of capital shares purchased through an employee stock purchase plan. + References No definition available. + Details
Name: | csv_EmployeeStockPurchasePlanWeightedAveragePurchasePriceOfSharesPurchased
Namespace Prefix: | csv_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of Directors + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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