Commitments and Contingencies - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) |
May 31, 2021 |
May 31, 2020 |
|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Operating lease ROU assets – net | $ 3,797,527 | $ 4,770,280 |
| Current operating lease liabilities, included in current liabilities | 1,466,409 | 1,288,216 |
| Noncurrent operating lease liabilities, included in long-term liabilities | 2,431,144 | 3,482,064 |
| Total operating lease liabilities | $ 3,897,553 | $ 4,770,280 |