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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 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Debt and Equity Securities, FV-NI [Line Items]        
Realized gains $ 291 $ 435 $ 1,315 $ 739
Realized losses (414) (363) (855) (889)
Net change in care trusts’ corpus $ 123 $ (72) $ (460) $ 150