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Preneed Activities Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands | 9 Months Ended |
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Sep. 30, 2019 | Dec. 31, 2018
Estimate of Fair Value Measurement [Member] |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 3,063 | $ 21,083
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (18) | (445)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 19,854 | 51,356
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1,010) | (2,377)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 22,917 | 72,439
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ (1,028) | (2,822)
Document Period End Date | Sep. 30, 2019 |
US Treasury Securities |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 2,249 | 6,899
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (14) | (226)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,664 | 16,374
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (110) | (222)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 4,913 | 23,273
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (124) | (448)
Foreign Government Debt Securities |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 | 2,254
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | (9)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 12,349 | 25,330
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (745) | (1,788)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 12,349 | 27,584
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (745) | (1,797)
Corporate Debt Securities |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 814 | 11,579
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (4) | (206)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 4,763 | 6,563
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (151) | (310)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 5,577 | 18,142
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (155) | (516)
Residential Mortgage Backed Securities |  |
Schedule of unrealized loss on investments [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0 | 351
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | (4)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 50 | 3,010
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1) | (46)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 50 | 3,361
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | (1) | (50)
Asset-backed Securities |  |
Schedule of unrealized loss on investments [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 | 28 | 79
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (3) | (11)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 28 | 79
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ (3) | $ (11)

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