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Properties and Equipment, Net - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 29, 2016
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Property, Plant and Equipment [Line Items]            
Proceeds from sale of assets       $ 49,068 $ 7,380  
Gain (loss) on sale of assets   $ (1,245) $ 3,756 $ (768) $ 3,814  
East Texas | Oil and Gas Properties, Proved and Unproved            
Property, Plant and Equipment [Line Items]            
Proceeds from sale of assets $ 56,400          
Gain (loss) on sale of assets $ 500          
Escrow deposit           $ 6,300