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