Derivative Liability - Additional Information (Detail) - USD ($) |
3 Months Ended | 9 Months Ended | ||
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Feb. 29, 2020 |
Feb. 28, 2019 |
Feb. 29, 2020 |
Feb. 28, 2019 |
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| Derivative [Line Items] | ||||
| Change in fair value of derivative liability | $ (2,933,725) | $ 1,347,907 | $ (2,105,227) | $ 881,495 |
| Percentage Of Outstanding Common Stock To Be Acquired | 50.00% | |||
| Warrant [Member] | ||||
| Derivative [Line Items] | ||||
| Change in fair value of derivative liability | $ 4,110,000 | 530,000 | ||
| Convertible Note [Member] | ||||
| Derivative [Line Items] | ||||
| Change in fair value of derivative liability | $ 2,005,000 | $ 352.000 | ||
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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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