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Note 1 - Nature of Operations (Details Textual) - USD ($)
Mar. 16, 2022
Jan. 31, 2022
Jul. 31, 2021
Jan. 31, 2021
Working Capital   $ 61,700,000    
Cash and Cash Equivalents, at Carrying Value, Ending Balance   22,663,251 $ 44,312,780 $ 8,713,193
Inventory, Net, Total   40,231,990 $ 29,172,480  
Subsequent Event [Member] | The 2021 At-the-market Offerings [Member]        
Proceeds from Issuance of Common Stock, Net $ 16,500,000      
Uranium Inventory [Member]        
Inventory, Net, Total   $ 39,800,000