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Preneed Trust Investments (Estimated maturities of fixed preneed cemetery trust income securities) (Details) - Preneed Cemetery Trust Investments
$ in Thousands
Dec. 31, 2019
USD ($)
Debt and Equity Securities, FV-NI [Line Items]  
Due in one year or less $ 0
Due in one to five years 4,518
Due in five to ten years 10,395
Thereafter 23,425
Total $ 38,338