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Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in interest income and other, net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt and Equity Securities, FV-NI [Line Items]
Decrease (increase) in deferred preneed cemetery receipts held in trust	$ (4,579)	$ (5,111)	$ (6,017)
Perpetual Care Trust Investments | Other Interest Income
Debt and Equity Securities, FV-NI [Line Items]
Realized gains	1,364	926	872
Realized losses	(1,896)	(1,195)	(3,069)
Decrease (increase) in deferred preneed cemetery receipts held in trust	$ 532	$ 269	$ 2,197

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(b))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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