SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION (Details) - USD ($) |
Aug. 31, 2021 |
May 31, 2021 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Operating lease ROU assets – net | $ 3,435,326 | $ 3,797,527 |
| Current operating lease liabilities, included in current liabilities | 1,481,602 | 1,466,409 |
| Noncurrent operating lease liabilities, included in long-term liabilities | 2,064,121 | 2,431,144 |
| Total operating lease liabilities | $ 3,545,723 | $ 3,897,553 |