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Trust Investments (Purchases and sales of investments in preneed cemetery trusts) (Details) - Preneed Cemetery Trust Investments [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]    
Purchases $ (1,315) $ (8,411)
Sales $ 200 $ 8,049