Preneed Activities Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
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)