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Cemetery Perpetual Care Trust Investments (The Components of Care trusts' corpus) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt and Equity Securities, FV-NI [Line Items]    
Care trusts’ corpus $ 43,494 $ 49,856
Perpetual Care Trust Investments    
Debt and Equity Securities, FV-NI [Line Items]    
Trust assets, at market value 44,071 50,229
Obligations due from trust (577) (373)
Care trusts’ corpus $ 43,494 $ 49,856