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Note 3 - Capital Assets (Tables)
3 Months Ended
Aug. 31, 2025
Notes Tables  
Property, Plant and Equipment [Table Text Block]
    August 31,     May 31,  
    2025     2025  

Land

  $ 45,122     $ 44,529  

Production facilities

    416,605       407,650  

Equipment

    278,584       280,585  

Leasehold improvements

    20,415       20,415  

Finance lease, right-of-use assets

    40,019       40,308  

Construction in progress

    11,190       11,241  
    $ 811,935     $ 804,728  

Less: accumulated amortization

    (251,778 )     (236,295 )

Total

  $ 560,157     $ 568,433  
Disclosure of Long-Lived Assets Held-for-Sale [Table Text Block]
   

August 31,

   

May 31,

 
   

2025

   

2025

 

Production facilities

  $ 5,800     $ 5,800  

Total

  $ 5,800     $ 5,800