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Note 7 - Leases (Details Textual) - USD ($)
3 Months Ended
Aug. 31, 2024
Aug. 31, 2023
Finance Lease, Right-of-Use Asset, Amortization $ 4,045 $ 7,699
Equipment One [Member]    
Finance Lease, Right-of-Use Asset, Amortization $ 4,045 $ 7,699
Two Buildings [Member]    
Lessee, Operating Lease, Term of Contract 120 months  
Lessee, Operating Lease, Renewal Term 60 months  
Lessee, Operating Lease, Discount Rate 6.00%  
Corporate Offices [Member]    
Lessee, Operating Lease, Term of Contract 72 months  
Lessee, Operating Lease, Discount Rate 8.50%