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Preneed Trust Investments (Components of preneed cemetery trust investments) (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Preneed cemetery trust investments, net | $ 70,278,000 | $ 73,853,000
Fair value measurements, transfers between Level 1 and Level 2 | 0 |
Preneed Cemetery Trust Investments [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Preneed cemetery trust investments, at market value | 72,413,000 | 75,992,000
Less: allowance for contract cancellation | (2,135,000) | (2,139,000)
Preneed cemetery trust investments, net | $ 70,278,000 | $ 73,853,000

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- Definition The allowance for contract cancellation on trust investments. + References No definition available. + Details
Name: | csv_AllowanceForContractCancellation
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer, before allowance for related contract cancellations. + References No definition available. + Details
Name: | csv_AvailableForSaleSecuritiesCurrentBeforeAllowanceForContractCancellation
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair Value Measurements, Transfers Between Level 1 and Level 2 + References No definition available. + Details
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Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The aggregate fair value as of the balance sheet date of financial instruments and other positions which may include: (1) fixed income securities; (2) common stock; (3) mutual funds; (4) common trust funds; (5) master trusts; (6) certificates of deposit; (7) bank deposits; and (8) partnerships. + References No definition available. + Details
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Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |