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Preneed Trust Investments (Cost and fair market values associated with preneed cemetery trust investments) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Preneed Cemetery Trust Investments [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost $ 72,059,000   $ 72,059,000   $ 71,252,000
Unrealized Gains 5,501,000   5,501,000   4,425,000
Unrealized Losses (4,387,000)   (4,387,000)   (4,572,000)
Fair Market Value 73,173,000   73,173,000   71,105,000
Preneed cemetery trust investments $ 73,889,000   $ 73,889,000   $ 71,834,000
Fair market value as a percentage of cost 101.50%   101.50%   99.80%
Impairment charge, other than temporary decline in fair value of investments   $ 100,000 $ 0 $ 800,000  
Preneed Cemetery Trust Investments [Member] | Mortgage Backed Securities [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost         $ 949,000
Unrealized Gains         372,000
Unrealized Losses         (4,000)
Fair Market Value         1,317,000
Preneed Cemetery Trust Investments [Member] | Accrued Investment Income [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost $ 716,000   716,000   729,000
Fair Market Value 716,000   716,000   729,000
Preneed Funeral Trust Investments [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 90,222,000   90,222,000   91,335,000
Unrealized Gains 5,651,000   5,651,000   4,609,000
Unrealized Losses (4,463,000)   (4,463,000)   (4,716,000)
Fair Market Value 91,410,000   91,410,000   91,228,000
Preneed cemetery trust investments $ 92,151,000   $ 92,151,000   $ 91,980,000
Fair market value as a percentage of cost 101.30%   101.30%   99.90%
Impairment charge, other than temporary decline in fair value of investments $ 0 $ 100,000 $ 0 $ 900,000  
Preneed Funeral Trust Investments [Member] | Accrued Investment Income [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 741,000   741,000   $ 752,000
Fair Market Value 741,000   741,000   752,000
Fair Value, Inputs, Level 1 [Member] | Preneed Cemetery Trust Investments [Member] | Cash and money market accounts [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 4,698,000   4,698,000   10,852,000
Unrealized Gains 0   0   0
Unrealized Losses 0   0   0
Fair Market Value 4,698,000   4,698,000   10,852,000
Fair Value, Inputs, Level 1 [Member] | Preneed Cemetery Trust Investments [Member] | Common Stock [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 24,574,000   24,574,000   13,250,000
Unrealized Gains 3,376,000   3,376,000   2,191,000
Unrealized Losses (3,119,000)   (3,119,000)   (1,838,000)
Fair Market Value 24,831,000   24,831,000   13,603,000
Fair Value, Inputs, Level 1 [Member] | Preneed Funeral Trust Investments [Member] | Cash and money market accounts [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 15,636,000   15,636,000   22,787,000
Unrealized Gains 0   0   0
Unrealized Losses 0   0   0
Fair Market Value 15,636,000   15,636,000   22,787,000
Fair Value, Inputs, Level 1 [Member] | Preneed Funeral Trust Investments [Member] | Common Stock [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 24,488,000   24,488,000   13,675,000
Unrealized Gains 3,392,000   3,392,000   2,256,000
Unrealized Losses (3,133,000)   (3,133,000)   (1,850,000)
Fair Market Value 24,747,000   24,747,000   14,081,000
Fair Value, Inputs, Level 2 [Member] | Preneed Cemetery Trust Investments [Member] | Municipal Bonds [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost         496,000
Unrealized Gains         18,000
Unrealized Losses         (4,000)
Fair Market Value         510,000
Fair Value, Inputs, Level 2 [Member] | Preneed Cemetery Trust Investments [Member] | Foreign Government Debt Securities [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 4,834,000   4,834,000   7,574,000
Unrealized Gains 275,000   275,000   160,000
Unrealized Losses (168,000)   (168,000)   (656,000)
Fair Market Value 4,941,000   4,941,000   7,078,000
Fair Value, Inputs, Level 2 [Member] | Preneed Cemetery Trust Investments [Member] | Corporate Debt [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 19,335,000   19,335,000   20,621,000
Unrealized Gains 1,145,000   1,145,000   1,569,000
Unrealized Losses (553,000)   (553,000)   (1,123,000)
Fair Market Value 19,927,000   19,927,000   21,067,000
Fair Value, Inputs, Level 2 [Member] | Preneed Cemetery Trust Investments [Member] | Preferred Stock [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 16,329,000   16,329,000   16,287,000
Unrealized Gains 383,000   383,000   8,000
Unrealized Losses (524,000)   (524,000)   (947,000)
Fair Market Value 16,188,000   16,188,000   15,348,000
Fair Value, Inputs, Level 2 [Member] | Preneed Cemetery Trust Investments [Member] | Mortgage Backed Securities [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 1,089,000   1,089,000    
Unrealized Gains 240,000   240,000    
Unrealized Losses (23,000)   (23,000)    
Fair Market Value 1,306,000   1,306,000    
Fair Value, Inputs, Level 2 [Member] | Preneed Cemetery Trust Investments [Member] | Fixed Income [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 1,200,000   1,200,000   1,223,000
Unrealized Gains 81,000   81,000   107,000
Unrealized Losses 0   0   0
Fair Market Value 1,281,000   1,281,000   1,330,000
Fair Value, Inputs, Level 2 [Member] | Preneed Funeral Trust Investments [Member] | Foreign Government Debt Securities [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 4,882,000   4,882,000   7,692,000
Unrealized Gains 282,000   282,000   170,000
Unrealized Losses (166,000)   (166,000)   (677,000)
Fair Market Value 4,998,000   4,998,000   7,185,000
Fair Value, Inputs, Level 2 [Member] | Preneed Funeral Trust Investments [Member] | Corporate Debt [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 20,244,000   20,244,000   21,454,000
Unrealized Gains 1,165,000   1,165,000   1,566,000
Unrealized Losses (571,000)   (571,000)   (1,134,000)
Fair Market Value 20,838,000   20,838,000   21,886,000
Fair Value, Inputs, Level 2 [Member] | Preneed Funeral Trust Investments [Member] | Preferred Stock [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 16,837,000   16,837,000   17,037,000
Unrealized Gains 457,000   457,000   64,000
Unrealized Losses (526,000)   (526,000)   (970,000)
Fair Market Value 16,768,000   16,768,000   16,131,000
Fair Value, Inputs, Level 2 [Member] | Preneed Funeral Trust Investments [Member] | Mortgage Backed Securities [Member]          
Schedule of Trading Securities and Other Trading Assets [Line Items]          
Cost 1,273,000   1,273,000   1,165,000
Unrealized Gains 255,000   255,000   400,000
Unrealized Losses (25,000)   (25,000)   (5,000)
Fair Market Value $ 1,503,000   $ 1,503,000   $ 1,560,000