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LEASES (Details Narrative) - USD ($)
3 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Operating lease, weighted-average discount rate 5.40%  
Operating lease, weighted-average remaining lease term 1 year 2 months 12 days  
Operating lease, cost $ 189,000 $ 192,000
Maximum [Member]    
Operating lease term 3 years  
Minimum [Member]    
Operating lease term 11 years