Equity Awards and Warrants - Expense and unrecognized (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Jul. 31, 2020 |
May 31, 2021 |
May 31, 2020 |
May 31, 2019 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Compensation expense | $ 1,600 | $ 10,429 | $ 6,548 | $ 3,388 |
| Stock Options And Warrants [Member] | ||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Compensation expense | 8,800 | 6,500 | 3,400 | |
| Vested during the period, grant date fair value | 4,700 | $ 3,300 | $ 2,100 | |
| Unrecognized compensation expense | $ 8,200 | |||
| Weighted average period over which unrecognized compensation expense is expected to be recognized | 1 year 5 months 15 days | |||
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- Definition The grant date fair value of all share based compensation awards that vested during the period. No definition available.
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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Details
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