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Stockholders' Equity Stockholders' Equity (Outstanding stock options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Range Of Exercise Prices, $4.78-5.94 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | $ 4.78 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesFourDollarsandSeventyEightCentsThroughFiveDollarsandNinetyFourCentsMember
Exercise price range, upper range limit | $ 5.94 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesFourDollarsandSeventyEightCentsThroughFiveDollarsandNinetyFourCentsMember
Number of outstanding options at end of year | 184,221 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesFourDollarsandSeventyEightCentsThroughFiveDollarsandNinetyFourCentsMember
Weighted-average remaining contractual life, options outstanding | 6 years 2 months 8 days
Weighted average exercise price, options outstanding | $ 5.47 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesFourDollarsandSeventyEightCentsThroughFiveDollarsandNinetyFourCentsMember
Number of exercisable options at end of year | 167,900 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesFourDollarsandSeventyEightCentsThroughFiveDollarsandNinetyFourCentsMember
Weighted average exercise price, options exercisable | $ 5.43 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesFourDollarsandSeventyEightCentsThroughFiveDollarsandNinetyFourCentsMember
Range Of Exercise Prices, $16.73-17.21 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | $ 16.73 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesSixteenDollarsandSeventyThreeCentsThroughSeventeenDollarsandTwentyOneCentsMember
Exercise price range, upper range limit | $ 17.21 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesSixteenDollarsandSeventyThreeCentsThroughSeventeenDollarsandTwentyOneCentsMember
Number of outstanding options at end of year | 495,500 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesSixteenDollarsandSeventyThreeCentsThroughSeventeenDollarsandTwentyOneCentsMember
Weighted-average remaining contractual life, options outstanding | 8 years 18 days
Weighted average exercise price, options outstanding | $ 16.76 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesSixteenDollarsandSeventyThreeCentsThroughSeventeenDollarsandTwentyOneCentsMember
Number of exercisable options at end of year | 161,499 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesSixteenDollarsandSeventyThreeCentsThroughSeventeenDollarsandTwentyOneCentsMember
Weighted average exercise price, options exercisable | $ 16.73 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeOfExercisePricesSixteenDollarsandSeventyThreeCentsThroughSeventeenDollarsandTwentyOneCentsMember
Range of Exercise Prices, $18.86-20.49 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | $ 18.86 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesEighteenDollarsAndEightySixCentsThroughTwentyDollarsandFortyNineCentsMember
Exercise price range, upper range limit | $ 20.49 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesEighteenDollarsAndEightySixCentsThroughTwentyDollarsandFortyNineCentsMember
Number of outstanding options at end of year | 701,700 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesEighteenDollarsAndEightySixCentsThroughTwentyDollarsandFortyNineCentsMember
Weighted-average remaining contractual life, options outstanding | 4 years 2 months 12 days
Weighted average exercise price, options outstanding | $ 20.33 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesEighteenDollarsAndEightySixCentsThroughTwentyDollarsandFortyNineCentsMember
Number of exercisable options at end of year | 0 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesEighteenDollarsAndEightySixCentsThroughTwentyDollarsandFortyNineCentsMember
Weighted average exercise price, options exercisable | $ 0.00 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesEighteenDollarsAndEightySixCentsThroughTwentyDollarsandFortyNineCentsMember
Range of Exercise Prices, $4.78-20.49 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | $ 4.78 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesFourDollarsandSeventyEightCentsThroughTwentyDollarsandFortyNineCentsMember
Exercise price range, upper range limit | $ 20.49 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesFourDollarsandSeventyEightCentsThroughTwentyDollarsandFortyNineCentsMember
Number of outstanding options at end of year | 1,381,421 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesFourDollarsandSeventyEightCentsThroughTwentyDollarsandFortyNineCentsMember
Weighted-average remaining contractual life, options outstanding | 5 years 10 months 2 days
Weighted average exercise price, options outstanding | $ 17.07 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesFourDollarsandSeventyEightCentsThroughTwentyDollarsandFortyNineCentsMember
Number of exercisable options at end of year | 329,399 us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesFourDollarsandSeventyEightCentsThroughTwentyDollarsandFortyNineCentsMember
Weighted average exercise price, options exercisable | $ 10.97 us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 / us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis = csv_RangeofExercisePricesFourDollarsandSeventyEightCentsThroughTwentyDollarsandFortyNineCentsMember

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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and 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 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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