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Preneed Trust Investments (Preneed cemetery trust investment security transactions) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |
Fair value measurements, transfers between Level 1 and Level 2 |  |  | $ 0 |
Preneed Cemetery Trust Investments [Member] | Interest Income and Other, Net [Member] |  |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |
Investment income | $ 474,000 | $ 692,000 | 899,000 | $ 1,281,000
Realized gain, net | 18,000 | 1,395,000 | 871,000 | 2,215,000
Realized losses | (750,000) | (929,000) | (1,357,000) | (1,312,000)
Expenses and taxes | (221,000) | (332,000) | (272,000) | (877,000)
Increase (decrease) in deferred preneed cemetery receipts held in trust | $ 479,000 | $ (826,000) | $ (141,000) | $ (1,307,000)

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