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Note 1 - Nature of Operations (Details Textual) - USD ($)
$ in Thousands
1 Months Ended
Sep. 20, 2024
Dec. 04, 2024
Jan. 31, 2025
Oct. 31, 2024
Jul. 31, 2024
Working Capital       $ 248,490  
Cash and Cash Equivalents, at Carrying Value       190,596 $ 87,533
Inventory, Net       66,074 $ 75,833
Forecast [Member]          
Malpractice Loss Contingency, Letters of Credit and Surety Bonds     $ 25,000    
Kenneth Uranium Company and Wyoming Coal Resources Company [Member]          
Payments to Acquire Businesses, Gross $ 175,000        
November 2022 At-the-market Offering [Member] | Subsequent Event [Member]          
Proceeds from Issuance of Common Stock, Net   $ 31,040      
Uranium Inventory [Member]          
Inventory, Net       $ 64,630