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Cemetery Perpetual Care Trust Investments Cemetery Perpetual Care Trust Investments (Unrealized losses on perpetual care trust investments) (Details) - Perpetual Care Trust Investments - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | $ 8,247 | $ 21,221
Unrealized Losses, In Loss Position Less than12 months | (885) | (3,612)
Fair market value, In Loss Position Greater than12 months | 7,089 | 4,492
Unrealized Losses, In Loss Position Greater than12 months | (2,020) | (1,727)
Fair market value, Total | 15,336 | 25,713
Unrealized Losses, Total | (2,905) | (5,339)
Corporate debt |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 168 | 1,619
Unrealized Losses, In Loss Position Less than12 months | (26) | (189)
Fair market value, In Loss Position Greater than12 months | 549 | 639
Unrealized Losses, In Loss Position Greater than12 months | (149) | (196)
Fair market value, Total | 717 | 2,258
Unrealized Losses, Total | (175) | (385)
Preferred stock |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 1,057 | 7,006
Unrealized Losses, In Loss Position Less than12 months | (196) | (587)
Fair market value, In Loss Position Greater than12 months | 3,253 | 301
Unrealized Losses, In Loss Position Greater than12 months | (338) | (143)
Fair market value, Total | 4,310 | 7,307
Unrealized Losses, Total | (534) | (730)
Preferred stock |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months |  | 3,586
Unrealized Losses, In Loss Position Less than12 months |  | (279)
Fair market value, In Loss Position Greater than12 months |  | 2,787
Unrealized Losses, In Loss Position Greater than12 months |  | (541)
Fair market value, Total |  | 6,373
Unrealized Losses, Total |  | (820)
Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 2,989 |
Unrealized Losses, In Loss Position Less than12 months | (106) |
Fair market value, In Loss Position Greater than12 months | 0 |
Unrealized Losses, In Loss Position Greater than12 months | 0 |
Fair market value, Total | 2,989 |
Unrealized Losses, Total | (106) |
Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 0 | 0
Unrealized Losses, In Loss Position Less than12 months | 0 | 0
Fair market value, In Loss Position Greater than12 months | 252 | 32
Unrealized Losses, In Loss Position Greater than12 months | (71) | (9)
Fair market value, Total | 252 | 32
Unrealized Losses, Total | (71) | (9)
Fixed Income |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 3,299 | 9,010
Unrealized Losses, In Loss Position Less than12 months | (463) | (2,557)
Fair market value, In Loss Position Greater than12 months | 2,657 | 733
Unrealized Losses, In Loss Position Greater than12 months | (1,448) | (838)
Fair market value, Total | 5,956 | 9,743
Unrealized Losses, Total | (1,911) | $ (3,395)
Equity and Other Securities [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 2 |
Unrealized Losses, In Loss Position Less than12 months | 0 |
Fair market value, In Loss Position Greater than12 months | 18 |
Unrealized Losses, In Loss Position Greater than12 months | (1) |
Fair market value, Total | 20 |
Unrealized Losses, Total | (1) |
Fixed Income Securities |  |
Gain (Loss) on Securities [Line Items] |  |
Fair market value, In Loss Position Less than12 months | 732 |
Unrealized Losses, In Loss Position Less than12 months | 94 |
Fair market value, In Loss Position Greater than12 months | 360 |
Unrealized Losses, In Loss Position Greater than12 months | 13 |
Fair market value, Total | 1,092 |
Unrealized Losses, Total | $ 107 |

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