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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]
Realized gains	$ 0	$ 44	$ 925	$ 156
Realized losses	0	(261)	(630)	(1,943)
Decrease (increase) in care trusts’ corpus	$ 0	$ 217	$ (295)	$ 1,787