SHAREHOLDERS' EQUITY (Details) - USD ($)	6 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
SHAREHOLDERS' EQUITY (Details) [Line Items]
Stock or Unit Option Plan Expense	$ 621,985	$ 634,019
Sale of Stock, Number of Shares Issued in Transaction (in Shares)		565,664
Proceeds from Sale of Stock, Gross	1,988,000
Proceeds from Sale of Stock, Net	$ 1,936,000
Minimum [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Sale of Stock, Price Per Share (in Dollars per share)		$ 3.15
Maximum [Member]
SHAREHOLDERS' EQUITY (Details) [Line Items]
Sale of Stock, Price Per Share (in Dollars per share)		$ 4.26