Equity Awards and Warrants - Expense and unrecognized (Details) - USD ($) $ in Thousands, shares in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Feb. 28, 2022 |
Feb. 28, 2021 |
Feb. 28, 2022 |
Feb. 28, 2021 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Compensation expense | $ 4,219 | $ 9,053 | ||
| Surety Bond Backstop Agreement [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock based compensation | $ 6,600 | $ 6,600 | ||
| Common stock warrants to purchase shares | 15 | 15 | ||
| Equity Instruments | General and Administrative Expenses | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Compensation expense | $ (400) | $ 1,900 | $ 4,200 | $ 9,100 |
| Chief Executive Officer [Member] | Equity Instruments | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Stock based compensation | $ 1,300 | $ 1,300 | ||
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of noncash expense for share-based payment arrangement. 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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