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Preneed Trust Investments (Purchases and sales of investments in preneed cemetery trusts) (Details) - Preneed Cemetery Trust Investments [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]        
Purchases $ (1,434) $ (11,719) $ (19,540) $ (24,575)
Sales $ 5,973 $ 4,417 $ 18,003 $ 14,610