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Property and Equipment (Details 2) - USD ($)
$ in Thousands
9 Months Ended
Aug. 21, 2015
Sep. 30, 2015
Sep. 30, 2014
Property and Equipment      
Capital expenditures   $ 19,107 $ 22,021
Pending Land and Building Acquisition | Agreement of Sale with Augustine Land II, L.P.      
Property and Equipment      
Purchase price of leased land and office building to be acquired $ 79,900    
Term of closing date extension 60 days    
Deposit with a third party escrow agent $ 4,000    
Deposit with seller $ 4,000    
Capital expenditures   $ 8,000