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Subsequent Events SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 05, 2022 | Dec. 31, 2021 | Feb. 23, 2022 | Oct. 27, 2021 | Jul. 26, 2021 | May 18, 2021
Subsequent Event [Line Items] |  |  |  |  |  |
Legal Fees |  | $ 1,100 |  |  |  |
Stock Repurchase Program, Additional Authorized Amount |  |  |  | $ 75,000 | $ 25,000 | $ 25,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  | $ 8,100 |  |  |  |
Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Litigation Settlement, Expense | $ 1,000 |  |  |  |  |
Stock Repurchase Program, Additional Authorized Amount |  |  | $ 75,000 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  | $ 83,100 |  |  |

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- Definition Stock Repurchase Program, Additional Authorized Amount + References No definition available. + Details
Name: | csv_StockRepurchaseProgramAdditionalAuthorizedAmount
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
Name: | us-gaap_LegalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |