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SHAREHOLDERS' EQUITY (Details) - USD ($)
3 Months Ended 9 Months Ended
Feb. 28, 2023
Nov. 30, 2022
Aug. 31, 2022
Feb. 28, 2022
Nov. 30, 2021
Aug. 31, 2021
Feb. 28, 2023
Feb. 28, 2022
SHAREHOLDERS' EQUITY (Details) [Line Items]                
Share-Based Payment Arrangement, Expense $ 383,828 $ 318,230 $ 303,755 $ 325,349 $ 314,397 $ 319,622    
Proceeds from Issuance of Common Stock             $ 2,014,054 $ 2,401,734
Common Stock [Member]                
SHAREHOLDERS' EQUITY (Details) [Line Items]                
Sale of Stock, Number of Shares Issued in Transaction (in Shares)             573,889  
Sale of Stock, Consideration Received on Transaction             $ 2,014,000  
Proceeds from Issuance of Common Stock             $ 1,961,000  
Common Stock [Member] | Minimum [Member]                
SHAREHOLDERS' EQUITY (Details) [Line Items]                
Sale of Stock, Price Per Share (in Dollars per share) $ 3.15           $ 3.15  
Common Stock [Member] | Maximum [Member]                
SHAREHOLDERS' EQUITY (Details) [Line Items]                
Sale of Stock, Price Per Share (in Dollars per share) $ 4.26           $ 4.26  
Share-Based Payment Arrangement, Option [Member]                
SHAREHOLDERS' EQUITY (Details) [Line Items]                
Share-Based Payment Arrangement, Expense             $ 1,006,000 $ 959,000