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Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in interest income and other, net) (Details) - Perpetual Care Trust Invesments [Member] - Interest Income and Other, Net [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |  |
Realized gains | $ 0 | $ 44 | $ 925 | $ 156
Realized losses | 0 | (261) | (630) | (1,943)
Decrease (increase) in care trusts’ corpus | $ 0 | $ 217 | $ (295) | $ 1,787

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- Definition The change during the period, either increase or decrease, in total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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