Derivative Liability - Additional Information (Detail) - USD ($) |
6 Months Ended | |
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Nov. 30, 2020 |
Nov. 30, 2019 |
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| Derivative [Line Items] | ||
| Change in fair value of derivative liability | $ 829,000 | |
| Percentage Of Outstanding Common Stock To Be Acquired | 50.00% | |
| Warrant [Member] | ||
| Derivative [Line Items] | ||
| Change in fair value of derivative liability | 300,000 | |
| Convertible Note [Member] | ||
| Derivative [Line Items] | ||
| Change in fair value of derivative liability | $ 0 | $ 600,000 |
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- Definition Percentage Of Outstanding Common Stock To Be Acquired No definition available.
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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 Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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