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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, 2019 | Dec. 31, 2018
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Preneed cemetery trust investments | $ 74,572 | $ 64,549
Market value as a percentage of cost | 101.10% | 90.60%
Foreign Debt |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | $ 3,802
Unrealized Gains |  | 43
Unrealized Losses |  | (511)
Fair Market Value |  | 3,334
Preferred stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 13,987
Unrealized Gains |  | 362
Unrealized Losses |  | (1,026)
Fair Market Value |  | 13,323
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
Mortgage-backed securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost |  | 666
Unrealized Gains |  | 161
Unrealized Losses |  | (14)
Fair Market Value |  | 813
Trust securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | $ 73,009 | 70,584
Unrealized Gains | 5,098 | 1,523
Unrealized Losses | (4,272) | (8,133)
Fair Market Value | 73,835 | 63,974
Accrued investment income |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 737 | 575
Fair Market Value | 737 | 575
Fair Value, Level 1 | Cash and money market accounts |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 5,729 | 16,194
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 5,729 | 16,194
Fair Value, Level 1 | Common stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 28,569 | 24,867
Unrealized Gains | 2,766 | 903
Unrealized Losses | (3,017) | (5,436)
Fair Market Value | 28,318 | $ 20,334
Fair Value, Level 2 | Foreign Debt |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 5,609 |
Unrealized Gains | 312 |
Unrealized Losses | (243) |
Fair Market Value | 5,678 |
Fair Value, Level 2 | Preferred stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 16,916 |
Unrealized Gains | 1,044 |
Unrealized Losses | (649) |
Fair Market Value | 17,311 |
Fair Value, Level 2 | Preferred stock |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 14,206 |
Unrealized Gains | 904 |
Unrealized Losses | (164) |
Fair Market Value | 14,946 |
Fair Value, Level 2 | Mortgage-backed securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 517 |
Unrealized Gains | 0 |
Unrealized Losses | (114) |
Fair Market Value | 403 |
Fair Value, Level 2 | Fixed income |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Cost | 1,463 |
Unrealized Gains | 72 |
Unrealized Losses | (85) |
Fair Market Value | $ 1,450 |

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