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Trust Investments (Purchases and sales of investments in preneed cemetery trusts) (Details) - Preneed Cemetery Trust Investments [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Debt and Equity Securities, FV-NI [Line Items]        
Purchases $ (13,597) $ (8,186) $ (32,454) $ (10,258)
Sales $ 12,135 $ 10,026 $ 25,366 $ 13,899