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Basis of Presentation and Summary of Significant Accounting Policies Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Total benefit for income taxes | $ 3,502 | $ 5,082
Income taxes before discrete items | 28.90% | 26.50%

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- Definition Estimated Effective Income Tax Rate Reconciliation, Before Discrete Items, Percent + References No definition available. + Details
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- Definition Income Tax Expense (Benefit), Net of Uncertain Tax Positions + References No definition available. + Details
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Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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