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Preneed Trust Investments (Components of preneed cemetery trust investments) (Details) - Preneed Cemetery Trust Investments - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt and Equity Securities, FV-NI [Line Items]    
Preneed cemetery trust investments, at market value $ 64,549 $ 75,992
Less: allowance for contract cancellation (2,117) (2,139)
Available-for-sale securities, current $ 62,432 $ 73,853