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Preneed Trust Investments (Components of preneed cemetery trust investments) (Details) - Preneed Cemetery Trust Investments - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt and Equity Securities, FV-NI [Line Items]    
Preneed cemetery trust investments, at market value $ 74,572 $ 64,549
Less: allowance for contract cancellation (2,190) (2,117)
Available-for-sale securities, current $ 72,382 $ 62,432