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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, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]        
Realized gains $ 44 $ 731 $ 156 $ 1,706
Realized losses (261) (207) (1,943) (692)
Decrease (increase) in care trusts’ corpus $ 217 $ (524) $ 1,787 $ (1,014)