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Cemetery Perpetual Care Trust Investments (The Components of Care trusts' corpus) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt and Equity Securities, FV-NI [Line Items]    
Care trusts’ corpus $ 63,416 $ 43,494
Perpetual Care Trust Investments    
Debt and Equity Securities, FV-NI [Line Items]    
Trust assets, at market value 64,047 44,071
Obligations due from trust (631) (577)
Care trusts’ corpus $ 63,416 $ 43,494