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Trust Investments (Perpetual care trust investment security transactions recorded in Other revenue) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Gain (Loss) on Securities [Line Items]
Investment income									$ 8,461	$ 4,500	$ 5,934
Total	$ 90,088	$ 84,393	$ 77,477	$ 77,490	$ 71,149	$ 66,125	$ 67,752	$ 69,081	329,448	274,107	267,992
Net change in Care trusts’ corpus									(8,074)	(4,123)	(4,579)
Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Investment income									2,175	1,743	1,596
Net change in Care trusts’ corpus									(10,168)	(2,932)	7,192
Realized gains (losses), net									(5,090)	(4,677)	(5,817)
Unrealized Gain (Loss) on Investments									(5,515)	(826)	6,610
Other revenue
Gain (Loss) on Securities [Line Items]
Total									$ 24,834	$ 17,039	$ 17,135

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