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	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cemetary perpetual care trust investments		$ 48,679		$ 46,889
Fair market value as a percentage of cost		101.10%		99.30%
Impairment charge, other than temporary decline in fair value of investments	$ 100	$ 0	$ 500
Trust Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		47,632		$ 46,708
Unrealized Gains		3,435		2,764
Unrealized Losses		(2,888)		(3,072)
Fair Market Value		48,179		46,400
Accrued Investment Income [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		500		489
Fair Market Value		500		489
Fair Value, Inputs, Level 1 [Member] | Cash and Money Market Accounts [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		2,573		6,522
Unrealized Gains		0		0
Unrealized Losses		0		0
Fair Market Value		2,573		6,522
Fair Value, Inputs, Level 1 [Member] | Common Stock [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		15,263		8,259
Unrealized Gains		1,985		1,382
Unrealized Losses		(2,021)		(1,146)
Fair Market Value		15,227		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		3,568		5,100
Unrealized Gains		211		99
Unrealized Losses		(117)		(435)
Fair Market Value		3,662		4,764
Fair Value, Inputs, Level 2 [Member] | Corporate Debt [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		13,194		13,715
Unrealized Gains		768		966
Unrealized Losses		(368)		(821)
Fair Market Value		13,594		13,860
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		11,464		11,323
Unrealized Gains		260		5
Unrealized Losses		(368)		(664)
Fair Market Value		11,356		10,664
Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		661		569
Unrealized Gains		147		223
Unrealized Losses		(14)		(3)
Fair Market Value		794		789
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Cost		909		855
Unrealized Gains		64		76
Unrealized Losses		0		0
Fair Market Value		$ 973		$ 931