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Preneed Activities Schedule of Unrealized Loss on Investments (Details) - USD ($)
$ in Thousands
Mar. 31, 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 $ 8,288 $ 21,083
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (191) (445)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 37,400 51,356
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (1,518) (2,377)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 45,688 72,439
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (1,709) (2,822)
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 6,645 6,899
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (188) (226)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 10,015 16,374
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (103) (222)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 16,660 23,273
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (291) (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 17,772 25,330
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (1,138) (1,788)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 17,772 27,584
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (1,138) (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 1,643 11,579
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (3) (206)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 7,262 6,563
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (253) (310)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 8,905 18,142
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (256) (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 2,330 3,010
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (15) (46)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 2,330 3,361
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (15) (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 21 79
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (9) (11)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 21 79
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ (9) $ (11)