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Preneed Trust Investments (Cost and fair market values associated with preneed funeral trust investments) (Details) - Preneed Funeral Trust Investments - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 88,638 | $ 91,335
Unrealized Gains | 7,574 | 4,609
Unrealized Losses | (3,610) | (4,716)
Fair Market Value | 92,602 | 91,228
Preneed cemetery trust investments, at market value | $ 93,341 | $ 91,980
Market value as a percentage of cost | 104.50% | 99.90%
Accrued investment income |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | $ 739 | $ 752
Fair Market Value | 739 | 752
Fair Value, Level 1 | Cash and money market accounts |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 14,349 | 22,787
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 14,349 | 22,787
Fair Value, Level 1 | U.S. treasury debt |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 1,490 | 1,491
Unrealized Gains | 10 | 21
Unrealized Losses | (15) | (10)
Fair Market Value | 1,485 | 1,502
Fair Value, Level 1 | Common stock |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 26,129 | 13,675
Unrealized Gains | 5,253 | 2,256
Unrealized Losses | (2,468) | (1,850)
Fair Market Value | 28,914 | 14,081
Fair Value, Level 2 | Municipal bonds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost |  | 447
Unrealized Gains |  | 17
Unrealized Losses |  | (4)
Fair Market Value |  | 460
Fair Value, Level 2 | Foreign Debt |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 4,870 | 7,692
Unrealized Gains | 298 | 170
Unrealized Losses | (189) | (677)
Fair Market Value | 4,979 | 7,185
Fair Value, Level 2 | Corporate debt |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 18,963 | 21,454
Unrealized Gains | 1,197 | 1,566
Unrealized Losses | (278) | (1,134)
Fair Market Value | 19,882 | 21,886
Fair Value, Level 2 | Preferred stock |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 16,335 | 17,037
Unrealized Gains | 501 | 64
Unrealized Losses | (585) | (970)
Fair Market Value | 16,251 | 16,131
Fair Value, Level 2 | Collateralized Mortgage Backed Securities [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 1,187 | 1,165
Unrealized Gains | 263 | 400
Unrealized Losses | (27) | (5)
Fair Market Value | 1,423 | 1,560
Fair Value, Level 2 | Fixed Income Securities |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 1,974 | 2,124
Unrealized Gains | 52 | 115
Unrealized Losses | (48) | (66)
Fair Market Value | 1,978 | 2,173
Fair Value, Level 2 | Other investments |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Cost | 3,341 | 3,463
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | $ 3,341 | $ 3,463

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