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Trust Investments (Purchases and sales of investments in preneed funeral trusts) (Details) - Preneed Funeral Trust Investments [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Debt and Equity Securities, FV-NI [Line Items]    
Purchases $ (18,538) $ (10,759)
Sales $ 15,968 $ 2,785