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Asset Retirement Obligations Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended
Apr. 22, 2016
Jun. 30, 2016
Jun. 30, 2015
Apr. 22, 2016
Jun. 30, 2015
Dec. 31, 2015
Predecessor [Member]            
Asset Retirement Obligation $ 59,024     $ 59,024   $ 63,555
Fresh Start Adjustment for ARO 5,216     5,216    
Accretion expense 319   $ 1,381 1,610 $ 2,746  
Liabilities incurred for new wells and facilities construction       1    
Reductions due to sold wells       (6,545)    
Reductions due to plugged wells       (85)    
Revisions in estimates       488    
Asset retirement obligation - current portion           $ 7,165
Successor [Member]            
Asset Retirement Obligation $ 64,240 $ 56,105   $ 64,240    
Accretion expense   832        
Liabilities incurred for new wells and facilities construction   15        
Reductions due to sold wells   (8,123)        
Reductions due to plugged wells   (857)        
Revisions in estimates   2        
Asset retirement obligation - current portion   $ 5,058