Components of Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ in Thousands |
1 Months Ended | 2 Months Ended | 3 Months Ended | 8 Months Ended | 9 Months Ended | |||||||||
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Sep. 30, 2016 |
Sep. 12, 2016 |
Sep. 30, 2017 |
Sep. 12, 2016 |
Sep. 30, 2017 |
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Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||||||||||||
Net income (loss) | $ 43,463 | |||||||||||||
Successor [Member] | ||||||||||||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||||||||||||
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 55,000 | |||||||||||||
Net income (loss) | $ (3,441) | $ (5,947) | 43,463 | |||||||||||
Net loss attributable to common shareholders, Diluted | $ (3,441) | $ (5,947) | $ 43,463 | |||||||||||
Weighted-average shares – basic | 14,992,000 | 14,994,000 | 14,993,000 | |||||||||||
Effect of dilutive securities | 0 | 0 | [1] | 69,000 | [2] | |||||||||
Weighted-average shares – diluted | 14,992,000 | 14,994,000 | 15,062,000 | |||||||||||
Preferred Stock Dividends and Other Adjustments | $ 0 | $ 0 | $ 0 | |||||||||||
Net Income (Loss) Available to Common Stockholders, Basic | $ (3,441) | $ (5,947) | $ 43,463 | |||||||||||
Predecessor [Member] | ||||||||||||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||||||||||||
Net income (loss) | $ 1,155,341 | $ 1,054,602 | ||||||||||||
Net loss attributable to common shareholders, Diluted | $ 1,155,341 | $ 1,048,630 | ||||||||||||
Weighted-average shares – basic | 89,292,000 | 88,013,000 | ||||||||||||
Effect of dilutive securities | 22,166,000 | 36,074,000 | ||||||||||||
Weighted-average shares – diluted | 111,458,000 | 124,087,000 | ||||||||||||
Preferred Stock Dividends and Other Adjustments | $ 0 | $ (5,972) | [3] | |||||||||||
Net Income (Loss) Available to Common Stockholders, Basic | $ 1,155,341 | $ 1,048,630 | ||||||||||||
Predecessor [Member] | Series A Preferred Stock | ||||||||||||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||||||||||||
Perpetual Preferred Stock, dividend rate (as a percent) | 6.00% | |||||||||||||
Predecessor [Member] | Series B Preferred Stock | ||||||||||||||
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] | ||||||||||||||
Perpetual Preferred Stock, dividend rate (as a percent) | 6.00% | |||||||||||||
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