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Preneed Trust Investments (Unrealized losses on cemetery merchandise and service trust investments) (Details) - Preneed Cemetery Trust Investments [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Gain (Loss) on Investments [Line Items]      
Impairment charge, other than temporary decline in fair value of investments $ 0 $ 700  
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 15,245   $ 15,566
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (1,078)   (745)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 19,214   20,056
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (3,349)   (3,827)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 34,459   35,622
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (4,427)   (4,572)
Municipal Bonds [Member]      
Gain (Loss) on Investments [Line Items]      
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 399   228
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (33)   (4)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 399   228
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (33)   (4)
Foreign Debt [Member]      
Gain (Loss) on Investments [Line Items]      
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 845   2,523
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (20)   (180)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 2,553   2,868
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (400)   (475)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 3,398   5,391
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (420)   (655)
Corporate Debt [Member]      
Gain (Loss) on Investments [Line Items]      
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 7,146   6,939
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (529)   (233)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 1,715   2,168
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (498)   (890)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 8,861   9,107
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (1,027)   (1,123)
Preferred Stock [Member]      
Gain (Loss) on Investments [Line Items]      
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 1,933   3,217
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (64)   (121)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 11,750   11,635
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (664)   (826)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 13,683   14,852
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (728)   (947)
Mortgage Backed Securities [Member]      
Gain (Loss) on Investments [Line Items]      
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 270   51
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (13)   (5)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 0   0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 270   51
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (13)   (5)
Common Stock [Member]      
Gain (Loss) on Investments [Line Items]      
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 4,652   2,608
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss (419)   (202)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 3,196   3,385
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss (1,787)   (1,636)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 7,848   5,993
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ (2,206)   $ (1,838)