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Trust Investments (Preneed funeral trust investment security transactions) (Details) - Preneed Funeral Trust Investments [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Unrealized Gain (Loss) on Investments | $ (3,728) | $ 1,197 | $ 4,478 | $ (2,188)
Interest Income and Other, Net [Member] |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Investment income | 357 | 373 | 1,261 | 1,235
Realized gain, net | 2,072 | 2,821 | 15,331 | 6,978
Realized losses | (201) | (911) | (6,097) | (4,093)
Expenses and taxes | (409) | (296) | (1,041) | (646)
Decrease in deferred preneed funeral receipts held in trust | $ 1,909 | $ (3,184) | $ (13,932) | $ (1,286)

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