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Note 3 - Acquisition of UEX Corporation - Replacement Options Assumptions (Details) - Aug. 19, 2022 - UEX Acquisition [Member] - Replacement Options [Member]
$ / shares
$ / shares
Expected Dividend Yield 0.00%  
Minimum [Member]    
Exercise Price (in dollars per share) | (per share) $ 1.07 $ 1.39
Expected Risk Free Interest Rate 2.40%  
Expected Volatility 76.01%  
Expected Life in Years (Year) 1 month 13 days  
Maximum [Member]    
Exercise Price (in dollars per share) | (per share) $ 3.94 $ 5.12
Expected Risk Free Interest Rate 3.23%  
Expected Volatility 97.53%  
Expected Life in Years (Year) 1 year