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Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in Cemetery revenue) (Details) - Perpetual Care Trust Invesments [Member] - Cemetery Revenue [Member] - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Debt and Equity Securities, FV-NI [Line Items] |  |
Investment income | $ 1,087 | $ 1,533
Realized gain, net | (290) | (316)
Total | $ 797 | $ 1,217

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