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Goodwill (Changes in Goodwill) (Details) (USD $)
 3 Months Ended 12 Months Ended
Jun. 30, 2014
Mar. 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill [Line Items]          
Goodwill, maximum period between step one and step two impairment tests     3 years    
Impairment of goodwill $ 1,200,000us-gaap_GoodwillImpairmentLoss $ 1,100,000us-gaap_GoodwillImpairmentLoss $ 1,180,000us-gaap_GoodwillImpairmentLoss $ 100,000us-gaap_GoodwillImpairmentLoss $ 1,100,000us-gaap_GoodwillImpairmentLoss
Goodwill [Roll Forward]          
Goodwill at the beginning of year     221,087,000us-gaap_Goodwill 218,442,000us-gaap_Goodwill  
Increase in goodwill related to acquisitions     37,653,000us-gaap_GoodwillAcquiredDuringPeriod 3,843,000us-gaap_GoodwillAcquiredDuringPeriod  
Changes in previous estimates     101,000csv_GoodwillImpairmentAndChangesInPreviousEstimates 0csv_GoodwillImpairmentAndChangesInPreviousEstimates  
Net impairment and write-off related to divestitures     1,197,000csv_GoodwillWrittenOffDueToDiscontinuedOperations 1,198,000csv_GoodwillWrittenOffDueToDiscontinuedOperations  
Goodwill at the end of the year     257,442,000us-gaap_Goodwill 221,087,000us-gaap_Goodwill 218,442,000us-gaap_Goodwill
November 2013 acquisition          
Goodwill [Line Items]          
Goodwill, increase (decrease) to previous estimates     $ (100,000)csv_GoodwillChangesinPreviousEstimates
/ us-gaap_BusinessAcquisitionAxis
= csv_November2013AcquisitionMember