PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Feb. 28, 2021 |
Feb. 29, 2020 |
May 31, 2020 |
May 31, 2019 |
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| Disclosure Text Block Supplement [Abstract] | ||||
| Escrow Deposit Disbursements Related to Property Acquisition | $ 0 | $ 136,190 | $ 281,966 | $ 0 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of escrow deposit disbursements related to property acquisition in noncash investing or financing transactions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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