ACCOUNTS RECEIVABLE (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Feb. 28, 2021 |
Feb. 29, 2020 |
Feb. 28, 2021 |
Feb. 29, 2020 |
May 31, 2020 |
May 31, 2019 |
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| Receivables [Abstract] | ||||||
| Accounts Receivable, after Allowance for Credit Loss, Current | $ 277,437 | $ 277,437 | $ 161,409 | $ 163,571 | ||
| Accounts Receivable, Credit Loss Expense (Reversal) | $ 0 | $ 0 | 5,927 | $ 0 | 108,392 | $ 0 |
| Accounts Receivable, Allowance for Credit Loss, Writeoff | 7,668 | $ 101,512 | ||||
| Proceeds, Accounts Receivable, Previously Written Off, Recovery | $ 1,741 | |||||
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash inflow from recovery of accounts receivable previously written off. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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