Trust Investments (Unrealized losses on cemetery merchandise and service trust investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	$ 4,010	$ 5,771
Unrealized Losses, In Loss Position Less than12 months	(274)	(374)
In Loss Position Greater than 12 months	5,074	5,680
Unrealized Losses, In Loss Position Greater than12 months	(1,281)	(796)
Fair market value, Total	9,084	11,451
Unrealized Losses, Total	(1,555)	(1,170)
Preneed cemetery trust investments	$ 89,081	$ 74,572
Market value as a percentage of cost	106.70%	101.10%
Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	$ 3,494	$ 6,089
Unrealized Losses, In Loss Position Less than12 months	(238)	(413)
In Loss Position Greater than 12 months	4,918	5,595
Unrealized Losses, In Loss Position Greater than12 months	(1,159)	(780)
Fair market value, Total	8,412	11,684
Unrealized Losses, Total	(1,397)	(1,193)
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%
Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	$ 3,462	$ 4,214
Unrealized Losses, In Loss Position Less than12 months	(308)	(328)
In Loss Position Greater than 12 months	3,867	4,054
Unrealized Losses, In Loss Position Greater than12 months	(990)	(558)
Fair market value, Total	7,329	8,268
Unrealized Losses, Total	$ (1,298)	$ (886)
Market value as a percentage of cost	106.60%	104.90%
Corporate debt \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	$ 2,517	$ 268
Unrealized Losses, In Loss Position Less than12 months	(57)	(42)
In Loss Position Greater than 12 months	371	758
Unrealized Losses, In Loss Position Greater than12 months	(645)	(201)
Fair market value, Total	2,888	1,026
Unrealized Losses, Total	(702)	(243)
Corporate debt \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	2,225	274
Unrealized Losses, In Loss Position Less than12 months	(55)	(43)
In Loss Position Greater than 12 months	337	723
Unrealized Losses, In Loss Position Greater than12 months	(579)	(189)
Fair market value, Total	2,562	997
Unrealized Losses, Total	(634)	(232)
Corporate debt \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	1,728	168
Unrealized Losses, In Loss Position Less than12 months	(43)	(26)
In Loss Position Greater than 12 months	312	549
Unrealized Losses, In Loss Position Greater than12 months	(539)	(149)
Fair market value, Total	2,040	717
Unrealized Losses, Total	(582)	(175)
Preferred stock \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	784	1,368
Unrealized Losses, In Loss Position Less than12 months	(99)	(168)
In Loss Position Greater than 12 months	542	4,520
Unrealized Losses, In Loss Position Greater than12 months	(259)	(481)
Fair market value, Total	1,326	5,888
Unrealized Losses, Total	(358)	(649)
Cost		16,916
Unrealized Gains		1,044
Unrealized Losses		(649)
Fair Market Value		17,311
Preferred stock \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	763	1,403
Unrealized Losses, In Loss Position Less than12 months	(96)	(172)
In Loss Position Greater than 12 months	528	4,433
Unrealized Losses, In Loss Position Greater than12 months	(214)	(474)
Fair market value, Total	1,291	5,836
Unrealized Losses, Total	(310)	(646)
Preferred stock \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	592	1,057
Unrealized Losses, In Loss Position Less than12 months	(74)	(196)
In Loss Position Greater than 12 months	410	3,253
Unrealized Losses, In Loss Position Greater than12 months	(166)	(338)
Fair market value, Total	1,002	4,310
Unrealized Losses, Total	(240)	(534)
Mortgage-backed securities \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	709	4,135
Unrealized Losses, In Loss Position Less than12 months	(118)	(164)
In Loss Position Greater than 12 months	4,049	0
Unrealized Losses, In Loss Position Greater than12 months	(218)	0
Fair market value, Total	4,758	4,135
Unrealized Losses, Total	(336)	(164)
Mortgage-backed securities \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	506	4,412
Unrealized Losses, In Loss Position Less than12 months	(87)	(198)
In Loss Position Greater than 12 months	3,942	0
Unrealized Losses, In Loss Position Greater than12 months	(211)	0
Fair market value, Total	4,448	4,412
Unrealized Losses, Total	(298)	(198)
Mortgage-backed securities \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	1,142
Unrealized Losses, In Loss Position Less than12 months	(191)
In Loss Position Greater than 12 months	3,060
Unrealized Losses, In Loss Position Greater than12 months	(164)
Fair market value, Total	4,202
Unrealized Losses, Total	(355)
Mortgage-backed securities \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	0	0
Unrealized Losses, In Loss Position Less than12 months	0	0
In Loss Position Greater than 12 months	112	402
Unrealized Losses, In Loss Position Greater than12 months	(159)	(114)
Fair market value, Total	112	402
Unrealized Losses, Total	(159)	(114)
Cost		517
Unrealized Gains		0
Unrealized Losses		(114)
Fair Market Value		403
Mortgage-backed securities \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	0	0
Unrealized Losses, In Loss Position Less than12 months	0	0
In Loss Position Greater than 12 months	111	439
Unrealized Losses, In Loss Position Greater than12 months	(155)	(117)
Fair market value, Total	111	439
Unrealized Losses, Total	(155)	(117)
Mortgage-backed securities \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months	0	0
Unrealized Losses, In Loss Position Less than12 months	0	0
In Loss Position Greater than 12 months	85	252
Unrealized Losses, In Loss Position Greater than12 months	(121)	(71)
Fair market value, Total	85	252
Unrealized Losses, Total	(121)	(71)
Foreign Debt \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost		5,609
Unrealized Gains		312
Unrealized Losses		(243)
Fair Market Value		5,678
Preferred Stock [Member] \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost		14,206
Unrealized Gains		904
Unrealized Losses		(164)
Fair Market Value		14,946
Preferred Stock [Member] \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
In Loss Position Less than 12 months		2,989
Unrealized Losses, In Loss Position Less than12 months		(106)
In Loss Position Greater than 12 months		0
Unrealized Losses, In Loss Position Greater than12 months		0
Fair market value, Total		2,989
Unrealized Losses, Total		(106)
Accrued Investment Income [Member] \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	993	737
Fair Market Value	993	737
Accrued Investment Income [Member] \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	911	700
Fair Market Value	911	700
Accrued Investment Income [Member] \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	808	512
Fair Market Value	808	512
Trust Securities [Member] \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [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
Trust Securities [Member] \| Perpetual Care Trust Investments
Gain (Loss) on Securities [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 \| Common Stock [Member] \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [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 \| Common Stock [Member] \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Common Stock [Member] \| Perpetual Care Trust Investments
Gain (Loss) on Securities [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 1 \| Cash and Cash Equivalents [Member] \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [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 \| Cash and Cash Equivalents [Member] \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Cash and Cash Equivalents [Member] \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	686	4,624
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Market Value	686	4,624
Fair Value, Level 2 \| Preferred stock \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	14,856
Unrealized Gains	1,820
Unrealized Losses	(358)
Fair Market Value	16,318
Fair Value, Level 2 \| Preferred stock \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Preferred stock \| Perpetual Care Trust Investments
Gain (Loss) on Securities [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 \| Mortgage-backed securities \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	272
Unrealized Gains	0
Unrealized Losses	(159)
Fair Market Value	113
Fair Value, Level 2 \| Mortgage-backed securities \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	293	585
Unrealized Gains	1	0
Unrealized Losses	(155)	(117)
Fair Market Value	139	468
Fair Value, Level 2 \| Mortgage-backed securities \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	206	324
Unrealized Gains	0	0
Unrealized Losses	(121)	(71)
Fair Market Value	85	253
Fair Value, Level 2 \| Municipal Bonds [Member] \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	819
Unrealized Gains	6
Unrealized Losses	0
Fair Market Value	825
Fair Value, Level 2 \| Foreign Debt \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	15,953
Unrealized Gains	2,083
Unrealized Losses	(702)
Fair Market Value	17,334
Fair Value, Level 2 \| Foreign Debt \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Foreign Debt \| Perpetual Care Trust Investments
Gain (Loss) on Securities [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 \| Preferred Stock [Member] \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	11,886
Unrealized Gains	980
Unrealized Losses	(336)
Fair Market Value	12,530
Fair Value, Level 2 \| Preferred Stock [Member] \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Preferred Stock [Member] \| Perpetual Care Trust Investments
Gain (Loss) on Securities [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 \| Fixed Income Securities \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Other investments \| Preneed Funeral Trust Investments
Gain (Loss) on Securities [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 \| Fixed income \| Preneed Cemetery Trust Investments
Gain (Loss) on Securities [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 \| Fixed income \| Perpetual Care Trust Investments
Gain (Loss) on Securities [Line Items]
Cost	6,444	7,156
Unrealized Gains	1,054	618
Unrealized Losses	(220)	(107)
Fair Market Value	$ 7,278	$ 7,667

Trust Investments (Unrealized losses on cemetery merchandise and service trust investments) (Details) - USD ($)
$ in Thousands

Dec. 31, 2020

Dec. 31, 2019

Preneed Cemetery Trust Investments

Gain (Loss) on Securities [Line Items]

In Loss Position Less than 12 months

$ 4,010

$ 5,771

Unrealized Losses, In Loss Position Less than12 months

(274)

(374)

In Loss Position Greater than 12 months