Note 17 - Stockholders' Equity (Details) - Schedule of Stockholders' Equity Note, Warrants or Rights - $ / shares |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Aug. 14, 2018 |
May 31, 2018 |
Aug. 31, 2019 |
May 31, 2019 |
|
| Schedule of Stockholders' Equity Note, Warrants or Rights [Abstract] | ||||
| Warrants outstanding, Number of Shares | 4,497,750 | 54,818,985 | ||
| Warrants outstanding, Weighted Average Exercise Price | $ 0.61 | $ 0.53 | $ 0.53 | |
| Granted, Number of Shares | 16,160 | 50,738,235 | ||
| Granted, Weighted Average Exercise Price | $ 1.10 | $ 0.53 | ||
| Exercised, Number of Shares | 350,000 | 0 | (415,000) | |
| Exercised, Weighted Average Exercise Price | $ 0 | $ 0.75 | ||
| Cancelled / Expired, Number of Shares | 0 | 0 | ||
| Cancelled / Expired, Weighted Average Exercise Price | $ 0 | $ 0 | ||
| Warrants outstanding, Number of Shares | 54,835,145 | 54,818,985 |
| X | ||||||||||
- Definition Aggregate amount of each class of warrants or rights cancelled or expired. No definition available.
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| X | ||||||||||
- Definition Aggregate amount of each class of warrants or rights exercised. No definition available.
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| X | ||||||||||
- Definition The weighted average exercise price of each class of warrants or rights expired or cancelled. No definition available.
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| X | ||||||||||
- Definition The weighted average exercise price of each class of warrants or rights exercised. No definition available.
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| X | ||||||||||
- Definition The weighted average exercise price of each class of warrants or rights granted. No definition available.
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| X | ||||||||||
- Definition The weighted average exercise price of each class of warrants or rights outstanding. No definition available.
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| X | ||||||||||
- Definition Aggregate amount of each class of warrants or rights granted. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Number of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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