Income (Loss) Per Common Share - Computations of Basic and Diluted Income (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
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Jun. 30, 2021 |
Mar. 31, 2021 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
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| Earnings Per Share Reconciliation [Abstract] | ||||||||
| Net (loss) income | $ (156,472) | $ 27,151 | $ (167,583) | $ 166,195 | $ (129,321) | $ (1,388) | ||
| Participating earnings | [1] | 0 | 0 | 0 | 0 | |||
| Basic net (loss) income attributed to common shareholders | (156,472) | (167,583) | (129,321) | (1,388) | ||||
| Reallocation of participating earnings | [1] | 0 | 0 | 0 | 0 | |||
| Diluted net (loss) income attributed to common shareholders | $ (156,472) | $ (167,583) | $ (129,321) | $ (1,388) | ||||
| Net (loss) income per common share: | ||||||||
| Basic | $ (0.65) | $ (0.70) | $ (0.53) | $ (0.01) | ||||
| Diluted | $ (0.65) | $ (0.70) | $ (0.53) | $ (0.01) | ||||
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- Definition Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of earnings (loss) distributed and earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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