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Preneed Trust Investments (Cost and fair market values associated with preneed funeral trust investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
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Preneed Cemetery Trust Investments [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 71,397 | $ 71,306
Unrealized Gains | 4,554 | 7,535
Unrealized Losses | (4,492) | (3,549)
Fair Market Value | 71,459 | 75,292
Preneed cemetery trust investments | $ 72,095 | $ 75,992
Fair market value as a percentage of cost | 100.10% | 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 | $ 636 | 700
Fair Market Value | 636 | 700
Preneed Funeral Trust Investments [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 92,143 | 88,638
Unrealized Gains | 4,773 | 7,574
Unrealized Losses | (4,778) | (3,610)
Fair Market Value | 92,138 | 92,602
Preneed cemetery trust investments | $ 92,816 | $ 93,341
Fair market value as a percentage of cost | 100.00% | 104.50%
Preneed Funeral Trust Investments [Member] | Accrued Investment Income [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 678 | $ 739
Fair Market Value | 678 | 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 | 10,388 | 3,132
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 10,388 | 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 | 28,388 | 26,465
Unrealized Gains | 3,306 | 5,250
Unrealized Losses | (3,376) | (2,460)
Fair Market Value | 28,318 | 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 | 22,200 | 14,349
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 22,200 | 14,349
Fair Value, Inputs, Level 1 [Member] | Preneed Funeral Trust Investments [Member] | U.S. Treasury Debt [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 1,455 | 1,490
Unrealized Gains | 3 | 10
Unrealized Losses | (30) | (15)
Fair Market Value | 1,428 | 1,485
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 | 29,568 | 26,129
Unrealized Gains | 3,506 | 5,253
Unrealized Losses | (3,522) | (2,468)
Fair Market Value | 29,552 | 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 | 4,353 | 4,834
Unrealized Gains | 179 | 292
Unrealized Losses | (138) | (193)
Fair Market Value | 4,394 | 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 | 16,756 | 18,238
Unrealized Gains | 672 | 1,184
Unrealized Losses | (478) | (273)
Fair Market Value | 16,950 | 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 | 10,667 | 16,421
Unrealized Gains | 54 | 510
Unrealized Losses | (490) | (588)
Fair Market Value | 10,231 | 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 | 845 |
Unrealized Gains | 343 |
Unrealized Losses | (10) |
Fair Market Value | 1,178 |
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 |  | 1,198
Unrealized Gains |  | 50
Unrealized Losses |  | (11)
Fair Market Value |  | 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 | 4,613 | 4,870
Unrealized Gains | 195 | 298
Unrealized Losses | (143) | (189)
Fair Market Value | 4,665 | 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 | 18,130 | 18,963
Unrealized Gains | 643 | 1,197
Unrealized Losses | (516) | (278)
Fair Market Value | 18,257 | 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 | 11,876 | 16,335
Unrealized Gains | 46 | 501
Unrealized Losses | (524) | (585)
Fair Market Value | 11,398 | 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 | 1,024 | 1,187
Unrealized Gains | 380 | 263
Unrealized Losses | (14) | (27)
Fair Market Value | 1,390 | 1,423
Fair Value, Inputs, Level 2 [Member] | Preneed Funeral Trust Investments [Member] | Fixed Income [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 275 | 1,974
Unrealized Gains | 0 | 52
Unrealized Losses | (29) | (48)
Fair Market Value | 246 | 1,978
Fair Value, Inputs, Level 2 [Member] | Preneed Funeral Trust Investments [Member] | Other Investments [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 3,002 | 3,341
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | $ 3,002 | $ 3,341

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