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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 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Gain (Loss) on Securities [Line Items]        
Purchases $ (7,960) $ (7,680) $ (33,638) $ (21,954)
Sales $ 7,168 $ 6,599 $ 29,319 $ 14,578