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Trust Investments (Cost and fair market value associated with preneed funeral trust investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Preneed Cemetery Trust Investments
Debt and Equity Securities, FV-NI [Line Items]
Preneed cemetery trust investments	$ 89,081	$ 74,572
Market value as a percentage of cost	106.70%	101.10%
Preneed Cemetery Trust Investments | Foreign Debt
Debt and Equity Securities, FV-NI [Line Items]
Cost		$ 5,609
Unrealized Gains		312
Unrealized Losses		(243)
Fair Market Value		5,678
Preneed Cemetery Trust Investments | Preferred stock
Debt and Equity Securities, FV-NI [Line Items]
Cost		16,916
Unrealized Gains		1,044
Unrealized Losses		(649)
Fair Market Value		17,311
Preneed Cemetery Trust Investments | Preferred Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost		14,206
Unrealized Gains		904
Unrealized Losses		(164)
Fair Market Value		14,946
Preneed Cemetery Trust Investments | Mortgage-backed securities
Debt and Equity Securities, FV-NI [Line Items]
Cost		517
Unrealized Gains		0
Unrealized Losses		(114)
Fair Market Value		403
Preneed Cemetery Trust Investments | Accrued Investment Income [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	$ 993	737
Fair Market Value	993	737
Preneed Cemetery Trust Investments | Trust Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	82,573	73,009
Unrealized Gains	13,856	5,098
Unrealized Losses	(8,341)	(4,272)
Fair Market Value	88,088	73,835
Preneed Funeral Trust Investments
Debt and Equity Securities, FV-NI [Line Items]
Cost	97,700	97,047
Unrealized Gains	13,125	5,672
Unrealized Losses	(7,570)	(4,173)
Fair Market Value	103,255	98,546
Preneed cemetery trust investments	$ 104,166	$ 99,246
Market value as a percentage of cost	105.70%	101.50%
Preneed Funeral Trust Investments | Accrued Investment Income [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	$ 911	$ 700
Fair Market Value	$ 911	$ 700
Perpetual Care Trust Investments
Debt and Equity Securities, FV-NI [Line Items]
Market value as a percentage of cost	106.60%	104.90%
Perpetual Care Trust Investments | Accrued Investment Income [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	$ 808	$ 512
Fair Market Value	808	512
Perpetual Care Trust Investments | Trust Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	65,665	60,571
Unrealized Gains	11,128	5,869
Unrealized Losses	(6,773)	(2,905)
Fair Market Value	70,020	63,535
Fair Value, Level 1 | Preneed Cemetery Trust Investments | Cash and Cash Equivalents
Debt and Equity Securities, FV-NI [Line Items]
Cost	1,859	5,729
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Market Value	1,859	5,729
Fair Value, Level 1 | Preneed Cemetery Trust Investments | Common Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	30,253	28,569
Unrealized Gains	7,642	2,766
Unrealized Losses	(6,601)	(3,017)
Fair Market Value	31,294	28,318
Fair Value, Level 1 | Preneed Funeral Trust Investments | Cash and Cash Equivalents
Debt and Equity Securities, FV-NI [Line Items]
Cost	18,478	24,160
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Market Value	18,478	24,160
Fair Value, Level 1 | Preneed Funeral Trust Investments | U.S. treasury debt
Debt and Equity Securities, FV-NI [Line Items]
Cost		822
Unrealized Gains		0
Unrealized Losses		0
Fair Market Value		822
Fair Value, Level 1 | Preneed Funeral Trust Investments | Common Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	28,327	27,652
Unrealized Gains	7,364	2,773
Unrealized Losses	(6,052)	(2,869)
Fair Market Value	29,639	27,556
Fair Value, Level 1 | Perpetual Care Trust Investments | Cash and Cash Equivalents
Debt and Equity Securities, FV-NI [Line Items]
Cost	686	4,624
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Market Value	686	4,624
Fair Value, Level 1 | Perpetual Care Trust Investments | Common Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	23,662	21,594
Unrealized Gains	6,108	3,399
Unrealized Losses	(5,255)	(1,911)
Fair Market Value	24,515	23,082
Fair Value, Level 2 | Preneed Cemetery Trust Investments | Foreign Debt
Debt and Equity Securities, FV-NI [Line Items]
Cost	15,953
Unrealized Gains	2,083
Unrealized Losses	(702)
Fair Market Value	17,334
Fair Value, Level 2 | Preneed Cemetery Trust Investments | Preferred stock
Debt and Equity Securities, FV-NI [Line Items]
Cost	14,856
Unrealized Gains	1,820
Unrealized Losses	(358)
Fair Market Value	16,318
Fair Value, Level 2 | Preneed Cemetery Trust Investments | Preferred Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	11,886
Unrealized Gains	980
Unrealized Losses	(336)
Fair Market Value	12,530
Fair Value, Level 2 | Preneed Cemetery Trust Investments | Mortgage-backed securities
Debt and Equity Securities, FV-NI [Line Items]
Cost	272
Unrealized Gains	0
Unrealized Losses	(159)
Fair Market Value	113
Fair Value, Level 2 | Preneed Cemetery Trust Investments | Fixed income
Debt and Equity Securities, FV-NI [Line Items]
Cost	7,494	1,463
Unrealized Gains	1,331	72
Unrealized Losses	(185)	(85)
Fair Market Value	8,640	1,450
Fair Value, Level 2 | Preneed Funeral Trust Investments | Foreign Debt
Debt and Equity Securities, FV-NI [Line Items]
Cost	15,144	5,587
Unrealized Gains	2,018	309
Unrealized Losses	(634)	(232)
Fair Market Value	16,528	5,664
Fair Value, Level 2 | Preneed Funeral Trust Investments | Preferred stock
Debt and Equity Securities, FV-NI [Line Items]
Cost	13,292	16,109
Unrealized Gains	1,638	992
Unrealized Losses	(310)	(646)
Fair Market Value	14,620	16,455
Fair Value, Level 2 | Preneed Funeral Trust Investments | Preferred Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	10,944	14,094
Unrealized Gains	900	874
Unrealized Losses	(298)	(198)
Fair Market Value	11,546	14,770
Fair Value, Level 2 | Preneed Funeral Trust Investments | Mortgage-backed securities
Debt and Equity Securities, FV-NI [Line Items]
Cost	293	585
Unrealized Gains	1	0
Unrealized Losses	(155)	(117)
Fair Market Value	139	468
Fair Value, Level 2 | Preneed Funeral Trust Investments | Equity Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost		772
Unrealized Gains		617
Unrealized Losses		(4)
Fair Market Value		1,385
Fair Value, Level 2 | Preneed Funeral Trust Investments | Fixed Income Securities
Debt and Equity Securities, FV-NI [Line Items]
Cost	6,475	4,364
Unrealized Gains	1,198	107
Unrealized Losses	(121)	(107)
Fair Market Value	7,552	4,364
Fair Value, Level 2 | Preneed Funeral Trust Investments | Other investments
Debt and Equity Securities, FV-NI [Line Items]
Cost	3,928	2,902
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Market Value	3,928	2,902
Fair Value, Level 2 | Perpetual Care Trust Investments | Foreign Debt
Debt and Equity Securities, FV-NI [Line Items]
Cost	12,539	4,200
Unrealized Gains	1,641	238
Unrealized Losses	(582)	(175)
Fair Market Value	13,598	4,263
Fair Value, Level 2 | Perpetual Care Trust Investments | Preferred stock
Debt and Equity Securities, FV-NI [Line Items]
Cost	11,684	11,658
Unrealized Gains	1,506	802
Unrealized Losses	(240)	(534)
Fair Market Value	12,950	11,926
Fair Value, Level 2 | Perpetual Care Trust Investments | Preferred Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost	10,444	10,782
Unrealized Gains	819	666
Unrealized Losses	(355)	(106)
Fair Market Value	10,908	11,342
Fair Value, Level 2 | Perpetual Care Trust Investments | Mortgage-backed securities
Debt and Equity Securities, FV-NI [Line Items]
Cost	206	324
Unrealized Gains	0	0
Unrealized Losses	(121)	(71)
Fair Market Value	85	253
Fair Value, Level 2 | Perpetual Care Trust Investments | Equity Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Cost		233
Unrealized Gains		146
Unrealized Losses		(1)
Fair Market Value		378
Fair Value, Level 2 | Perpetual Care Trust Investments | Fixed income
Debt and Equity Securities, FV-NI [Line Items]
Cost	6,444	7,156
Unrealized Gains	1,054	618
Unrealized Losses	(220)	(107)
Fair Market Value	$ 7,278	$ 7,667

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