Note 6 - Prepaid Expenses and Other Current Assets (Details) - Deferred Costs, Capitalized, Prepaid, and Other Assets - USD ($) |
Aug. 31, 2019 |
May 31, 2019 |
|---|---|---|
| Deferred Costs, Capitalized, Prepaid, and Other Assets [Abstract] | ||
| Deposits | $ 75,303 | $ 211,493 |
| Prepaid expenses | 217,834 | 178,920 |
| Total | $ 293,137 | $ 390,413 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of consideration paid in advance for legal services that provides economic benefits within a future period of one year or the normal operating cycle, if longer. No definition available.
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| X | ||||||||||
- Definition Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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