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COMMITMENTS AND CONTINGENCIES (Details) - OPERATING LEASES - USD ($)
12 Months Ended
Nov. 01, 2016
May 31, 2022
May 31, 2021
Building In Irvine California [Member] | First Amendment To Lease [Member]      
COMMITMENTS AND CONTINGENCIES (Details) - OPERATING LEASES [Line Items]      
Lease Expiration Date   Aug. 31, 2021  
Operating Lease, Expense   $ 25,000  
Security Deposit   26,000  
Property Available for Operating Lease [Member] | MEXICO      
COMMITMENTS AND CONTINGENCIES (Details) - OPERATING LEASES [Line Items]      
Operating Lease, Expense $ 3,400 42,000 $ 25,000
Lease Expiration Period 10 years    
Property Available for Operating Lease [Member] | UNITED STATES      
COMMITMENTS AND CONTINGENCIES (Details) - OPERATING LEASES [Line Items]      
Operating Lease, Expense   $ 310,000 $ 295,000