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Asset Retirement Obligations Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
3 Months Ended 4 Months Ended 5 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Apr. 22, 2016
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Predecessor [Member]            
Asset Retirement Obligation     $ 59,024     $ 63,555
Fresh Start Adjustment for ARO     5,216      
Accretion expense   $ 1,410 1,610   $ 4,156  
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 $ 58,283   $ 64,240 $ 58,283    
Accretion expense 1,099     1,931    
Liabilities incurred for new wells and facilities construction       15    
Reductions due to sold wells       (9,971)    
Reductions due to plugged wells       (916)    
Revisions in estimates       2,984    
Asset retirement obligation - current portion $ 2,922     $ 2,922