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Preneed Trust Investments (Unrealized losses on cemetery merchandise and service trust investments) (Details) - Preneed Cemetery Trust Investments [Member] - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 21,704 | $ 31,502
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (2,649) | (5,469)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 11,944 | 6,346
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (2,644) | (2,664)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 33,648 | 37,848
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (5,293) | (8,133)
Available-for-sale Securities, Amortized Cost Basis | 71,208 | 70,584
Unrealized Gains | 3,269 | 1,523
Foreign Debt [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 2,002 | 2,140
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (41) | (245)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,185 | 895
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (208) | (266)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,187 | 3,035
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (249) | (511)
Corporate Debt [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,062 | 9,918
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (60) | (813)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 5,209 | 443
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (395) | (213)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 6,271 | 10,361
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (455) | (1,026)
Preferred Stock [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 4,641 | 5,253
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (236) | (399)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 3,974 | 3,767
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (538) | (747)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 8,615 | 9,020
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (774) | (1,146)
Mortgage Backed Securities [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 119 | 51
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (21) | (14)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 119 | 51
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (21) | (14)
Available-for-sale Securities, Amortized Cost Basis |  | 666
Unrealized Gains |  | 161
Common Stock [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 13,544 | 14,191
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (2,310) | (4,012)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,457 | 1,190
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1,482) | (1,424)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 15,001 | 15,381
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (3,792) | (5,436)
Mutual Fund [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 455 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (2) |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 455 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (2) |
Fair Value, Inputs, Level 1 [Member] | Common stock |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 29,834 | 24,867
Unrealized Gains | 2,298 | 903
Fair Value, Inputs, Level 2 [Member] | Corporate Debt [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 14,199 | 13,987
Unrealized Gains | 444 | $ 362
Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 643 |
Unrealized Gains | $ 90 |

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