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Note 4 - Property, Plant and Equipment (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Aug. 31, 2025
Aug. 31, 2024
May 31, 2025
May 31, 2024
Feb. 29, 2024
Property, Plant and Equipment, Net $ 29,114,385   $ 30,044,886    
Depreciation Expense, Including Amortization Related to Financing Leases 1,529,809 $ 1,256,831      
Gain on Business Interruption Insurance Recovery (0) $ 741,821      
Fire [Member]          
Inventory, Finished Goods, Net of Reserves         $ 1,326,752
Insurance Settlements Receivable       $ 2,058,602  
Gain on Business Interruption Insurance Recovery       $ 593,647  
Electrical Storm [Member]          
Gain on Business Interruption Insurance Recovery     $ 741,821    
Machinery and Equipment [Member]          
Property, Plant and Equipment, Net $ 374,077        
Building [Member] | Fire [Member]          
Property, Plant and Equipment, Net         $ 161,850