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Preneed Activities Level 3 Activities (Details) - Other Investments [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair market value, beginning balance $ 189 $ 423 $ 190 $ 8,218
Net realized losses included in Other income, net(2) 0 (355) (1) (612)
Purchases 0 57 0 4,626
Sales 0 (60) 0 (5,356)
Fair market value, ending balance 189 65 189 65
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 $ 0 $ 0 $ 0 $ (6,811)