SHAREHOLDERS' EQUITY (Details) - USD ($)	3 Months Ended
Aug. 31, 2022	Aug. 31, 2021
SHAREHOLDERS' EQUITY (Details) [Line Items]
Share-Based Payment Arrangement, Expense	$ 303,755	$ 319,622
Proceeds from Issuance of Common Stock	$ 1,810,927	838,333
Common Stock [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Sale of Stock, Number of Shares Issued in Transaction (in Shares)	523,977
Sale of Stock, Consideration Received on Transaction	$ 1,811,000
Proceeds from Issuance of Common Stock	$ 1,764,000
Common Stock [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Sale of Stock, Price Per Share (in Dollars per share)	$ 3.15
Common Stock [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Sale of Stock, Price Per Share (in Dollars per share)	$ 3.55
Share-Based Payment Arrangement, Option [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Share-Based Payment Arrangement, Expense	$ 304,000	$ 320,000

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

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- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

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