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Preneed Trust Investments (Preneed cemetery trust investment security transactions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt and Equity Securities, FV-NI [Line Items]
Investment income	$ 5,934	$ 5,949	$ 6,451
Decrease (increase) in deferred preneed cemetery receipts held in trust	(4,579)	(5,111)	(6,017)
Preneed Cemetery Trust Investments
Debt and Equity Securities, FV-NI [Line Items]
Investment income	1,596	2,250	2,250
Realized gains	4,546	2,218	2,141
Realized losses	(5,817)	(2,384)	(6,559)
Expenses and taxes	(907)	(1,308)	(1,266)
Decrease (increase) in deferred preneed cemetery receipts held in trust	$ 582	$ (776)	$ 3,434

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