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Preneed Trust Investments Preneed Trust Investments (Unrealized losses on cemetery merchandise and service trust investments) (Details) - Preneed Cemetery Trust Investments - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | $ 31,502 | $ 12,806
Unrealized Losses, In Loss Position Less than12 months | (5,469) | (1,616)
Fair market value, In Loss Position Greater than12 months | 6,346 | 12,361
Unrealized Losses, In Loss Position Greater than12 months | (2,664) | (1,933)
Fair market value, Total | 37,848 | 25,167
Unrealized Losses, Total | (8,133) | (3,549)
Foreign debt |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 2,140 | 151
Unrealized Losses, In Loss Position Less than12 months | (245) | (6)
Fair market value, In Loss Position Greater than12 months | 895 | 1,637
Unrealized Losses, In Loss Position Greater than12 months | (266) | (187)
Fair market value, Total | 3,035 | 1,788
Unrealized Losses, Total | (511) | (193)
Corporate debt |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 9,918 | 3,735
Unrealized Losses, In Loss Position Less than12 months | (813) | (72)
Fair market value, In Loss Position Greater than12 months | 443 | 846
Unrealized Losses, In Loss Position Greater than12 months | (213) | (201)
Fair market value, Total | 10,361 | 4,581
Unrealized Losses, Total | (1,026) | (273)
Preferred stock |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 5,253 | 48
Unrealized Losses, In Loss Position Less than12 months | (399) | 0
Fair market value, In Loss Position Greater than12 months | 3,767 | 8,109
Unrealized Losses, In Loss Position Greater than12 months | (747) | (588)
Fair market value, Total | 9,020 | 8,157
Unrealized Losses, Total | (1,146) | (588)
Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 0 | 127
Unrealized Losses, In Loss Position Less than12 months | 0 | (15)
Fair market value, In Loss Position Greater than12 months | 51 | 27
Unrealized Losses, In Loss Position Greater than12 months | (14) | (9)
Fair market value, Total | 51 | 154
Unrealized Losses, Total | (14) | (24)
Common stock |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 14,191 | 8,249
Unrealized Losses, In Loss Position Less than12 months | (4,012) | (1,512)
Fair market value, In Loss Position Greater than12 months | 1,190 | 1,742
Unrealized Losses, In Loss Position Greater than12 months | (1,424) | (948)
Fair market value, Total | 15,381 | 9,991
Unrealized Losses, Total | $ (5,436) | (2,460)
Mutual Fund [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months |  | 496
Unrealized Losses, In Loss Position Less than12 months |  | (11)
Fair market value, In Loss Position Greater than12 months |  | 0
Unrealized Losses, In Loss Position Greater than12 months |  | 0
Fair market value, Total |  | 496
Unrealized Losses, Total |  | $ (11)

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