Preneed Activities Level 3 Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Sales	$ 0	$ 0	$ (2,900)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Recurring Basis, Asset, Transfer, Net	(6,811)	0	0
Other Investments [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair market value, beginning balance	8,218	9,755	9,067
Net realized losses included in Other income, net(2)	(1,215)	(761)	(697)
Purchases	0	1,006	66
Sales	(2)	(1,782)	(26)
AcquisitionRelatedInvestmentsFairvalueofLevel3	0	0	1,345
Fair market value, ending balance	$ 190	$ 8,218	$ 9,755