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Cemetery Perpetual Care Trust Investments (Cost and fair market values associated with the trust investments held in perpetual care trust funds) (Details) - Perpetual Care Trust Invesments [Member] - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cemetary perpetual care trust investments		$ 47,539	$ 46,889
Fair market value as a percentage of cost		99.50%	99.30%
Impairment charge, other than temporary decline in fair value of investments	$ 400
Trust Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		$ 47,377	$ 46,708
Unrealized Gains		2,590	2,764
Unrealized Losses		(2,845)	(3,072)
Fair Market Value		47,122	46,400
Accrued Investment Income [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		417	489
Fair Market Value		417	489
Fair Value, Inputs, Level 1 [Member] | Cash and Money Market Accounts [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		3,106	6,522
Unrealized Gains		0	0
Unrealized Losses		0	0
Fair Market Value		3,106	6,522
Fair Value, Inputs, Level 1 [Member] | Common Stock [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		14,609	8,259
Unrealized Gains		1,450	1,382
Unrealized Losses		(1,883)	(1,146)
Fair Market Value		14,176	8,495
Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost			365
Unrealized Gains			13
Unrealized Losses			(3)
Fair Market Value			375
Fair Value, Inputs, Level 2 [Member] | Foreign Government Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		3,546	5,100
Unrealized Gains		164	99
Unrealized Losses		(176)	(435)
Fair Market Value		3,534	4,764
Fair Value, Inputs, Level 2 [Member] | Corporate Debt [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		13,121	13,715
Unrealized Gains		639	966
Unrealized Losses		(424)	(821)
Fair Market Value		13,336	13,860
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		11,396	11,323
Unrealized Gains		126	5
Unrealized Losses		(348)	(664)
Fair Market Value		11,174	10,664
Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		695	569
Unrealized Gains		159	223
Unrealized Losses		(13)	(3)
Fair Market Value		841	789
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		904	855
Unrealized Gains		52	76
Unrealized Losses		(1)	0
Fair Market Value		$ 955	$ 931

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