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Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 2 Months Ended 10 Months Ended 12 Months Ended
Feb. 28, 2017
Jul. 31, 2018
Feb. 28, 2017
Feb. 27, 2017
Dec. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Net (loss) income     $ (502,964) $ (502,964) $ (21,068) $ 43,539 $ 147,102
less: Series A preferred stock dividends and conversion to common stock   $ (87,000)     (18,248) 0 (97,942)
Net income (loss) attributable to common stockholders         $ (39,316) $ 43,539 $ 49,160
Weighted-average shares of common stock outstanding (in shares)         38,644,000 81,379,000 57,743,000
Basic earnings (loss) per share (in dollars per share)         $ (1.02) $ 0.54 $ 0.85
Dilutive effect of potentially dilutive securities (in shares)         0 572,000 189,000
Weighted-average common shares outstanding - diluted (in shares)         38,644,000 81,951,000 57,932,000
Diluted earnings (loss) per share (in dollars per share)         $ (1.02) $ 0.53 $ 0.85
Common stock reserved to settle claims of unsecured creditors (in shares) 7,080,000       7,080,000   7,080,000
Potentially dilutive securities (in shares)         0    
Scenario, Adjustment              
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Weighted-average shares of common stock outstanding (in shares)             2,770,000