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Preneed Trust Investments (Cost and fair market values associated with preneed cemetery trust investments) (Details) - Preneed Cemetery Trust Investments - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Debt and Equity Securities, FV-NI [Line Items] |  |
Preneed cemetery trust investments | $ 64,549 | $ 75,992
Market value as a percentage of cost | 90.60% | 105.60%
Foreign Debt |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | $ 4,834
Unrealized Gains |  | 292
Unrealized Losses |  | (193)
Fair Market Value |  | 4,933
Corporate debt |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 18,238
Unrealized Gains |  | 1,184
Unrealized Losses |  | (273)
Fair Market Value |  | 19,149
Preferred stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 16,421
Unrealized Gains |  | 510
Unrealized Losses |  | (588)
Fair Market Value |  | 16,343
Mortgage-backed securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 1,018
Unrealized Gains |  | 249
Unrealized Losses |  | (24)
Fair Market Value |  | 1,243
Trust securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | $ 70,584 | 71,306
Unrealized Gains | 1,523 | 7,535
Unrealized Losses | (8,133) | (3,549)
Fair Market Value | 63,974 | 75,292
Accrued investment income |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 575 | 700
Fair Market Value | 575 | 700
Fair Value, Level 1 | Cash and money market accounts |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 16,194 | 3,132
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 16,194 | 3,132
Fair Value, Level 1 | Common stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 24,867 | 26,465
Unrealized Gains | 903 | 5,250
Unrealized Losses | (5,436) | (2,460)
Fair Market Value | 20,334 | 29,255
Fair Value, Level 2 | Municipal bonds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 0
Unrealized Gains |  | 0
Unrealized Losses |  | 0
Fair Market Value |  | 0
Fair Value, Level 2 | Foreign Debt |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 3,802 |
Unrealized Gains | 43 |
Unrealized Losses | (511) |
Fair Market Value | 3,334 |
Fair Value, Level 2 | Corporate debt |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 13,987 |
Unrealized Gains | 362 |
Unrealized Losses | (1,026) |
Fair Market Value | 13,323 |
Fair Value, Level 2 | Preferred stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 11,068 |
Unrealized Gains | 54 |
Unrealized Losses | (1,146) |
Fair Market Value | 9,976 |
Fair Value, Level 2 | Mortgage-backed securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 666 |
Unrealized Gains | 161 |
Unrealized Losses | (14) |
Fair Market Value | $ 813 |
Fair Value, Level 2 | Fixed income |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 1,198
Unrealized Gains |  | 50
Unrealized Losses |  | (11)
Fair Market Value |  | $ 1,237

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