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Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in Cemetery revenue) (Details) - Perpetual Care Trust Invesments [Member] - Cemetery Revenue [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]        
Investment income $ 1,586 $ 1,504 $ 3,292 $ 2,980
Realized gain, net (108) (195) (608) (458)
Total $ 1,478 $ 1,309 $ 2,684 $ 2,522