STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME - Computation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, $ in Thousands |
1 Months Ended | 2 Months Ended | 3 Months Ended | 7 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|---|---|
Oct. 31, 2019 |
Dec. 31, 2019 |
Dec. 31, 2020 |
Oct. 31, 2019 |
Dec. 31, 2020 |
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| Debt Instrument [Line Items] | |||||||
| Net income (loss) attributable to Bristow Group Inc. | $ (504,194) | $ (152,512) | $ (57,121) | $ (836,414) | $ (13,506) | ||
| Less: PIK dividends | 0 | (10,313) | 0 | 0 | (12,039) | ||
| Plus: Deemed contribution from conversion of preferred stock | 0 | 0 | 144,986 | ||||
| Income (loss) available to common stockholders, basic | (504,194) | (162,825) | (57,121) | (836,414) | 119,441 | ||
| Less: Preferred stock adjustments | 0 | 0 | (3,377) | ||||
| Income available to common stockholders – diluted | $ (504,194) | $ (162,825) | $ (57,121) | $ (836,414) | $ 116,064 | ||
| Weighted average number of common shares outstanding – basic (in shares) | [1] | 35,918,916 | 11,235,535 | 28,944,908 | 35,918,916 | 23,178,914 | |
| Net effect of dilutive stock options and restricted stock (in shares) | 0 | 0 | 0 | 0 | 9,196,618 | ||
| Weighted average number of common shares outstanding – diluted (in shares) | [1] | 35,918,916 | 11,235,535 | 28,944,908 | 35,918,916 | 32,375,532 | |
| Earnings (loss) per common share - basic (in dollars per share) | [1] | $ (14.04) | $ (14.49) | $ (1.97) | $ (23.29) | $ 5.15 | |
| Earnings (loss) per common share - diluted (in dollars per share) | [1] | $ (14.04) | $ (14.49) | $ (1.97) | $ (23.29) | $ 3.58 | |
| 4½% Convertible Senior Notes due 2023 | Convertible Debt | |||||||
| Debt Instrument [Line Items] | |||||||
| Stated interest rate | 4.50% | 4.50% | |||||
| Stock Options and Restricted Stock | |||||||
| Debt Instrument [Line Items] | |||||||
| Weighted average common shares excluded from computation (in shares) | 3,929,274 | 1,275,170 | 3,822,563 | 1,275,170 | |||
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- 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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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible preferred stock using the if-converted method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Conversion Of Preferred Stock, Deemed Contribution No definition available.
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