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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
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Investment income | $ 591 | $ 340
Realized gain, net | 824 | 144
Realized losses | (379) | (2,396)
Expenses and taxes | (339) | (247)
Decrease in deferred preneed funeral receipts held in trust | $ (697) | $ 2,159

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