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Earnings (Loss) per Share - Calculation of Weighted Average Common Shares Outstanding used in Computation of Diluted Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 01, 2016
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Oct. 01, 2016
Dec. 31, 2017
Dec. 31, 2015
Successor                        
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                        
Net Income (Loss), Basic   $ (18,760) $ (8,485) $ 23,499 $ 50,808 $ (333,982)         $ 47,062  
Weighted Average Shares, basic           18,967         32,442  
Earnings (Loss) Per Share, Basic (in dollars per share)   $ (0.54) $ (0.25) $ 0.69 $ 1.90 $ (17.61)         $ 1.45  
Effect of dilutive securities                        
Net Income (Loss), Restricted stock           $ 0         $ 0  
Weighted Average Shares, Restricted stock           0         221  
Net Income (Loss), Performance share units                     $ 0  
Weighted Average Shares, Performance share units                     0  
Net Income (Loss), Warrants           $ 0         $ 0  
Weighted Average Shares, Warrants           0         0  
Net Income (Loss), Convertible notes           $ 0            
Weighted Average Shares, Convertible notes           0            
Net Income (Loss), Diluted           $ (333,982)         $ 47,062  
Weighted Average Shares, Diluted           18,967         32,663  
Earnings (Loss) Per Share, Diluted (in dollars per share)   $ (0.54) $ (0.25) $ 0.69 $ 1.90 $ (17.61)         $ 1.44  
Predecessor                        
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]                        
Net Income (Loss), Basic $ 2,674,271           $ (404,337) $ (521,351) $ (324,107) $ 1,424,476   $ (3,735,495)
Weighted Average Shares, basic                   708,928   521,936
Earnings (Loss) Per Share, Basic (in dollars per share) $ 3.72           $ (0.56) $ (0.73) $ (0.47) $ 2.01   $ (7.16)
Effect of dilutive securities                        
Net Income (Loss), Restricted stock                   $ 0   $ 0
Weighted Average Shares, Restricted stock                   0   0
Net Income (Loss), Convertible preferred stock                       $ 0
Weighted Average Shares, Convertible preferred stock                       0
Net Income (Loss), Diluted                   $ 1,424,476   $ (3,735,495)
Weighted Average Shares, Diluted                   708,928   521,936
Earnings (Loss) Per Share, Diluted (in dollars per share) $ 3.72           $ (0.56) $ (0.73) $ (0.47) $ 2.01   $ (7.16)