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Note 18 - Commitments and Contingencies (Tables)
 3 Months Ended
Aug. 31, 2025
Notes Tables  
Contractual Obligation, Fiscal Year Maturity [Table Text Block]
   

Total

    

2026

    

2027

    

2028

    

2029

    

Thereafter

  

Long-term debt repayment

   $ 161,572     $ 16,295     $ 16,241     $ 96,436     $ 3,531     $ 29,069  

Convertible debentures payable

     100,000       —       —       100,000       —       —  

Material purchase obligations

     73,691       41,073       26,580       6,038       —       —  

Construction commitments

     888       888       —       —       —       —  

Total

   $ 336,151     $ 58,256     $ 42,821     $ 202,474     $ 3,531     $ 29,069