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SCHEDULE OF SUPPLEMENTAL INFORMATION OF CASH FLOWS (Details) - USD ($)
12 Months Ended
May 31, 2022
May 31, 2021
Supplemental Cash Flow Elements [Abstract]    
Acquisition of equipment through financing leases $ 24,441
Acquisition of equipment in accounts payable 126,128 15,656
Equipment reclassified from inventory 26,750
Preferred dividend accrual 85,377
Interest paid 836,683 1,176,412
Income taxes paid $ 1,427,354 $ 178,280