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Assets Held for Sale and Discontinued Operations (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) divestiture	Dec. 31, 2019 USD ($) divestiture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of Businesses Sold | divestiture	8	3
Proceeds from Divestiture of Businesses | $	$ 8.4	$ 0.9

X

- Definition

Number of Businesses Sold

+ References

No definition available.

+ Details

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Namespace Prefix:	csv_
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Balance Type:	na
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X

- 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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X

- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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