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Cemetery Perpetual Care Trust Investments Cemetery Perpetual Care Trust Investments (Narrative) (Details) | 3 Months Ended
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Mar. 31, 2018 USD ($)
Schedule of Available-for-sale Securities [Line Items] |
Fair value measurements, transfers between Level 1 and Level 2 | $ 0

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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 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
Period Type: | duration