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Preneed Trust Investments (Estimated maturities of fixed preneed cemetery trust income securities) (Details) - Preneed Cemetery Trust Investments [Member]
$ in Thousands
Mar. 31, 2018
USD ($)
Schedule of Trading Securities and Other Trading Assets [Line Items]  
Due in one year or less $ 0
Due in one to five years 2,177
Due in five to ten years 2,561
Thereafter 32,900
Total $ 37,638