Cemetery Perpetual Care Trusts Level 3 Activities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net unrealized (losses) gains included in Accumulated other comprehensive income	$ 69,351	$ 17,985
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease)	(62)	0
Cemetery Perpetual Care
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair market value, beginning balance	1,887	1,902
Net unrealized (losses) gains included in Accumulated other comprehensive income	2	(19)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease)	(11)	0
Fair market value, ending balance	$ 1,878	$ 1,883