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Trust Investments (Purchases and sales of investments in the perpetual care trusts) (Details) - Preneed Funeral Trust Investments [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Gain (Loss) on Securities [Line Items]    
Purchases $ (14,612) $ (9,157)
Sales $ 12,694 $ 1,702