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Preneed Trust Investments Preneed Trust Investments (Unrealized losses on preneed funeral trust investments) (Details) - Preneed Funeral Trust Investments - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months $ 32,475 $ 14,075
Unrealized Losses, In Loss Position Less than12 months (5,560) (1,620)
Fair market value, In Loss Position Greater than12 months 7,659 13,013
Unrealized Losses, In Loss Position Greater than12 months (2,617) (1,990)
Fair market value, Total 40,134 27,088
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (8,177) (3,610)
U.S. treasury debt    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 0 1,325
Unrealized Losses, In Loss Position Less than12 months 0 (15)
Fair market value, In Loss Position Greater than12 months 1,181 0
Unrealized Losses, In Loss Position Greater than12 months (19) 0
Fair market value, Total 1,181 1,325
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (19) (15)
Foreign debt    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 2,180 159
Unrealized Losses, In Loss Position Less than12 months (251) (6)
Fair market value, In Loss Position Greater than12 months 850 1,608
Unrealized Losses, In Loss Position Greater than12 months (252) (183)
Fair market value, Total 3,030 1,767
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (503) (189)
Corporate debt    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 9,990 3,770
Unrealized Losses, In Loss Position Less than12 months (814) (74)
Fair market value, In Loss Position Greater than12 months 434 842
Unrealized Losses, In Loss Position Greater than12 months (211) (203)
Fair market value, Total 10,424 4,612
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (1,025) (277)
Preferred stock    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 5,967 50
Unrealized Losses, In Loss Position Less than12 months (460) 0
Fair market value, In Loss Position Greater than12 months 3,673 8,184
Unrealized Losses, In Loss Position Greater than12 months (734) (585)
Fair market value, Total 9,640 8,234
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (1,194) (585)
Mortgage-backed securities    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 11 221
Unrealized Losses, In Loss Position Less than12 months 0 (17)
Fair market value, In Loss Position Greater than12 months 120 36
Unrealized Losses, In Loss Position Greater than12 months (18) (10)
Fair market value, Total 131 257
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (18) (27)
Common stock    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 14,327 8,001
Unrealized Losses, In Loss Position Less than12 months (4,035) (1,496)
Fair market value, In Loss Position Greater than12 months 1,155 1,728
Unrealized Losses, In Loss Position Greater than12 months (1,354) (972)
Fair market value, Total 15,482 9,729
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss (5,389) (2,468)
Fixed income    
Gain (Loss) on Securities [Line Items]    
Fair market value, In Loss Position Less than12 months 0 549
Unrealized Losses, In Loss Position Less than12 months 0 (12)
Fair market value, In Loss Position Greater than12 months 246 615
Unrealized Losses, In Loss Position Greater than12 months (29) (37)
Fair market value, Total 246 1,164
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ (29) $ (49)