Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Gain (Los) On Derivative Instruments (Details)

v3.5.0.2
Derivative Instruments - Gain (Los) On Derivative Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Derivative [Line Items]        
Net (loss) gain on derivative instruments $ (137,392) $ (10,082) $ (79,657) $ 40,022
Gas sales        
Derivative [Line Items]        
Net (loss) gain on derivative instruments (133,621) (8,087) (76,621) 38,453
Oil and condensate sales        
Derivative [Line Items]        
Net (loss) gain on derivative instruments (2,628) (1,995) (1,346) 1,569
Natural gas liquids sales        
Derivative [Line Items]        
Net (loss) gain on derivative instruments $ (1,143) $ 0 $ (1,690) $ 0