Acquisition, Textuals (Details) - USD ($) $ in Thousands	3 Months Ended								9 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	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquisitions [Abstract]
(Losses) gains on divestitures										$ 11,962	$ 41,835	$ 20,340
Impairment losses										(4,953)	(8,916)	(4,407)
Gains on divestitures and impairment charges, net										7,009	32,919	15,933
Business Combination Segment Allocation [Line Items]
Revenue	$ 970,268	$ 918,241	$ 820,035	$ 802,965	$ 850,760	$ 769,241	$ 812,572	$ 798,212		3,511,509	3,230,785	3,190,174
Net Income	$ 201,091	$ 127,492	$ 105,553	$ 82,001	$ 147,173	$ 70,872	$ 72,513	$ 79,213		516,137	369,771	447,558
Acquisition Spend									$ 82,200	116,200	107,000
Large Acquisition Debt Acquired									$ 49,800
Payments for (Proceeds from) Delayed Tax Exempt Exchange										55,100	13,600	5,900
Cemetery [Member]
Business Combination Segment Allocation [Line Items]
Revenue										1,459,208	1,306,883	1,292,182
Funeral [Member]
Business Combination Segment Allocation [Line Items]
Revenue										$ 2,052,301	1,923,902	$ 1,897,992
Current Year Acquisition [Member]
Business Combination Segment Allocation [Line Items]
Revenue											17,900
Net Income											$ 1,700