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Preneed Activities Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value |  | $ 55,264
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses |  | (797)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value |  | 11,154
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses |  | (603)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value |  | 66,418
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses |  | (1,400)
US Treasury Securities [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 6,899 | 29,014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (226) | (115)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 16,374 | 106
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (222) | (2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 23,273 | 29,120
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (448) | (117)
Debt Security, Government, Non-US [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 2,254 | 20,947
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (9) | (639)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 25,330 | 6,370
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (1,788) | (450)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 27,584 | 27,317
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (1,797) | (1,089)
Corporate Debt Securities [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 11,579 | 2,423
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (206) | (31)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 6,563 | 4,453
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (310) | (139)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 18,142 | 6,876
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (516) | (170)
Residential Mortgage Backed Securities [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 351 | 2,880
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (4) | (12)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 3,010 | 151
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (46) | (2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,361 | 3,031
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (50) | (14)
Asset-backed Securities [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 79 | 74
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (11) | (10)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 79 | 74
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | (11) | $ (10)
Estimate of Fair Value Measurement [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 21,083 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses | (445) |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 51,356 |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses | (2,377) |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 72,439 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses | $ (2,822) |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References No definition available. + Details
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