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Preneed Trust Investments (Preneed funeral trust investment security transactions) (Details) - Preneed Funeral Trust Investments [Member] - Interest Income and Other, Net [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |
Investment income | $ 362 | $ 524 | $ 1,253 | $ 1,801
Realized gain, net | 1,425 | 0 | 4,332 | 2,296
Realized losses | (1,232) | (2) | (2,623) | (1,314)
Expenses and taxes | (190) | (390) | (668) | (1,106)
Decrease in deferred preneed funeral receipts held in trust | $ (365) | $ (132) | $ (2,294) | $ (1,677)

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