SCHEDULE OF SUPPLEMENTAL CASH FLOW AND OTHER INFORMATION (Details) - USD ($) |
9 Months Ended | |
|---|---|---|
Feb. 28, 2022 |
Feb. 28, 2021 |
|
| Commitments and Contingencies Disclosure [Abstract] | ||
| Cash paid for amounts included in the measurement of lease liabilities: Operating leases | $ 1,098,769 | $ 981,967 |
| ROU assets obtained in exchange for lease liabilities: Operating leases | $ 223,242 | |
| Weighted average remaining lease term (in years): Operating leases | 3 years 11 months 23 days | 4 years 2 months 12 days |
| Weighted average discount rate | 4.25% | 4.25% |