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Preneed Trust Investments (Preneed cemetery trust investment security transactions) (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Fair value measurements, transfers between Level 1 and Level 2 $ 0  
Preneed Cemetery Trust Investments [Member] | Interest Income and Other, Net [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Investment income 589,000 $ 291,000
Realized gain, net 820,000 108,000
Realized losses (383,000) (2,480,000)
Expenses and taxes (545,000) (343,000)
Increase (decrease) in deferred preneed cemetery receipts held in trust $ (481,000) $ 2,424,000