SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION (Details) - USD ($) |
Nov. 30, 2021 |
May 31, 2021 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Operating lease ROU assets – net | $ 3,087,387 | $ 3,797,527 |
| Current operating lease liabilities, included in current liabilities | 1,399,186 | 1,466,409 |
| Noncurrent operating lease liabilities, included in long-term liabilities | 1,799,273 | 2,431,144 |
| Total operating lease liabilities | $ 3,198,459 | $ 3,897,553 |