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Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in interest income and other, net) (Details) - Perpetual Care Trust Invesments [Member] - Interest Income and Other, Net [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Debt and Equity Securities, FV-NI [Line Items]        
Realized gains $ 670 $ 22 $ 1,024 $ 304
Realized losses (270) (312) (441) (526)
Net change in care trusts’ corpus $ (400) $ 290 $ (583) $ 222