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Preneed Activities Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
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	$ 51,191	$ 55,264
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,226)	(797)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	16,452	11,154
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(914)	(603)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	67,643	66,418
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(2,140)	(1,400)
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	27,045	29,014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(402)	(115)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,045	106
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(27)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	29,090	29,120
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(429)	(117)
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	16,545	20,947
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(684)	(639)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	9,999	6,370
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(695)	(450)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	26,544	27,317
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(1,379)	(1,089)
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	4,728	2,423
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(80)	(31)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	4,165	4,453
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(180)	(139)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	8,893	6,876
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(260)	(170)
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	2,868	2,880
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(59)	(12)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	150	151
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	3,018	3,031
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(61)	(14)
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	5	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	93	74
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(10)	(10)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	98	74
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (11)	$ (10)

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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).

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

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-Publisher FASB
-Name Accounting Standards Codification
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