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Trust Investments (Unrealized losses on cemetery merchandise and service trust investments) (Details) - Preneed Cemetery Trust Investments [Member] - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
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Gain (Loss) on Securities [Line Items] |  |
In Loss Position Less than 12 months | $ 21,358 | $ 5,771
In Loss Position Less than 12 months | (4,969) | (374)
In Loss Position Greater than 12 months | 3,541 | 5,680
In Loss Position Greater than 12 months | (2,237) | (796)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 24,899 | 11,451
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (7,206) | (1,170)
Available-for-sale Securities, Amortized Cost Basis | 78,465 | 73,009
Unrealized Gains | 2,323 | 5,098
Foreign debt |  |
Gain (Loss) on Securities [Line Items] |  |
In Loss Position Less than 12 months | 4,655 | 268
In Loss Position Less than 12 months | (1,153) | (42)
In Loss Position Greater than 12 months | 168 | 758
In Loss Position Greater than 12 months | (534) | (201)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 4,823 | 1,026
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (1,687) | (243)
Corporate Debt [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
In Loss Position Less than 12 months | 5,810 | 1,368
In Loss Position Less than 12 months | (1,412) | (168)
In Loss Position Greater than 12 months | 3,253 | 4,520
In Loss Position Greater than 12 months | (1,567) | (481)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 9,063 | 5,888
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (2,979) | (649)
Preferred stock |  |
Gain (Loss) on Securities [Line Items] |  |
In Loss Position Less than 12 months | 10,813 | 4,135
In Loss Position Less than 12 months | (2,289) | (164)
In Loss Position Greater than 12 months | 0 | 0
In Loss Position Greater than 12 months | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 10,813 | 4,135
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (2,289) | (164)
Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
In Loss Position Less than 12 months | 80 | 0
In Loss Position Less than 12 months | (115) | 0
In Loss Position Greater than 12 months | 120 | 402
In Loss Position Greater than 12 months | (136) | (114)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 200 | 402
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (251) | (114)
Available-for-sale Securities, Amortized Cost Basis |  | 517
Unrealized Gains |  | 0
Fair Value, Inputs, Level 1 [Member] | Common stock |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 34,456 | 28,569
Unrealized Gains | 1,646 | 2,766
Fair Value, Inputs, Level 2 [Member] | Corporate Debt [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 15,474 | 16,916
Unrealized Gains | 301 | $ 1,044
Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 451 |
Unrealized Gains | $ 0 |

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