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Cemetery Perpetual Care Trust Investments (Estimated maturities of fixed perpetual care trust income securities) (Details) - Perpetual Care Trust Invesments [Member]
$ in Thousands
Jun. 30, 2018
USD ($)
Schedule of Trading Securities and Other Trading Assets [Line Items]  
Due in one year or less $ 11
Due in one to five years 2,460
Due in five to ten years 2,995
Thereafter 18,850
Total $ 24,316