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Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in Cemetery revenue) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cemetery Perpetual Care Trust Investments [Abstract]      
Investment income $ 4,500 $ 5,934 $ 5,949
Realized losses, net (377) (1,355) (838)
Increase in Care trusts’ corpus $ 4,123 $ 4,579 $ 5,111