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Preneed Trust Investments (Cost and fair market values associated with preneed cemetery trust investments) (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Preneed Cemetery Trust Investments [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 71,783 | $ 71,306
Unrealized Gains | 5,426 | 7,535
Unrealized Losses | (5,512) | (3,549)
Fair Market Value | 71,697 | 75,292
Preneed cemetery trust investments | $ 72,450 | $ 75,992
Fair market value as a percentage of cost | 99.90% | 105.60%
Preneed Cemetery Trust Investments [Member] | Mortgage Backed Securities [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost |  | $ 1,018
Unrealized Gains |  | 249
Unrealized Losses |  | (24)
Fair Market Value |  | 1,243
Preneed Cemetery Trust Investments [Member] | Accrued Investment Income [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 753 | 700
Fair Market Value | 753 | 700
Preneed Funeral Trust Investments [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 94,031 | 88,638
Unrealized Gains | 5,384 | 7,574
Unrealized Losses | (5,566) | (3,610)
Fair Market Value | 93,849 | 92,602
Preneed cemetery trust investments | $ 94,603 | $ 93,341
Fair market value as a percentage of cost | 99.80% | 104.50%
Preneed Funeral Trust Investments [Member] | Accrued Investment Income [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 754 | $ 739
Fair Market Value | 754 | 739
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 | 7,366 | 3,132
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 7,366 | 3,132
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 | 25,216 | 26,465
Unrealized Gains | 4,074 | 5,250
Unrealized Losses | (3,783) | (2,460)
Fair Market Value | 25,507 | 29,255
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 | 24,381 | 14,349
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 24,381 | 14,349
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 | 24,674 | 26,129
Unrealized Gains | 4,033 | 5,253
Unrealized Losses | (3,751) | (2,468)
Fair Market Value | 24,956 | 28,914
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 | 4,848 | 4,834
Unrealized Gains | 193 | 292
Unrealized Losses | (244) | (193)
Fair Market Value | 4,797 | 4,933
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 | 15,665 | 18,238
Unrealized Gains | 733 | 1,184
Unrealized Losses | (665) | (273)
Fair Market Value | 15,733 | 19,149
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 | 16,471 | 16,421
Unrealized Gains | 118 | 510
Unrealized Losses | (751) | (588)
Fair Market Value | 15,838 | 16,343
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 | 1,015 |
Unrealized Gains | 281 |
Unrealized Losses | (26) |
Fair Market Value | 1,270 |
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 | 1,202 | 1,198
Unrealized Gains | 27 | 50
Unrealized Losses | (43) | (11)
Fair Market Value | 1,186 | 1,237
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 | 4,833 | 4,870
Unrealized Gains | 195 | 298
Unrealized Losses | (238) | (189)
Fair Market Value | 4,790 | 4,979
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 | 16,034 | 18,963
Unrealized Gains | 718 | 1,197
Unrealized Losses | (676) | (278)
Fair Market Value | 16,076 | 19,882
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 | 16,211 | 16,335
Unrealized Gains | 110 | 501
Unrealized Losses | (741) | (585)
Fair Market Value | 15,580 | 16,251
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 | 1,163 | 1,187
Unrealized Gains | 293 | 263
Unrealized Losses | (29) | (27)
Fair Market Value | $ 1,427 | $ 1,423

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