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Preneed Trust Investments (Preneed funeral trust investment security transactions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt and Equity Securities, FV-NI [Line Items]
Investment income	$ 4,500	$ 5,934	$ 5,949
Net change in deferred preneed cemetery receipts held in trust	(4,123)	(4,579)	(5,111)
Preneed Funeral Trust Investments
Debt and Equity Securities, FV-NI [Line Items]
Investment income	1,753	1,623	2,420
Realized gains	6,214	6,662	2,386
Realized losses	(4,612)	(5,882)	(2,396)
Expenses and taxes	(1,129)	(885)	(1,290)
Net change in deferred preneed cemetery receipts held in trust	$ (2,226)	$ (1,518)	$ (1,120)

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