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Note 11 - Stockholders' Equity and Common Stock Warrants (Details Textual) - USD ($)
1 Months Ended 9 Months Ended
Aug. 16, 2023
Jul. 31, 2023
Sep. 30, 2023
Sep. 30, 2022
Class of Warrant or Right, Outstanding     598,457  
Stock Issued During Period, Shares, Acquisitions     1,360,244  
Stock Issued During Period, Shares, New Issues   63,422    
Shares Issued, Price Per Share   $ 12.78    
Proceeds from Issuance of Common Stock   $ 800,000 $ 810,000 $ 0
Pre-funded Warrants [Member]        
Class of Warrant or Right, Outstanding 394,628      
Conversion of Preferred Stock into Common Stock [Member]        
Conversion of Stock, Shares Converted     3,331,201  
Conversion of Stock, Shares Issued     2,936,566  
Conversion of Debt into Common Stock [Member]        
Debt Conversion, Converted Instrument, Shares Issued 795,905   795,905  
Debt Conversion, Converted Instrument, Warrants or Options Issued 101,367   101,367