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Note 7 - Stockholders' Equity (Details Textual) - $ / shares
Dec. 31, 2023
Dec. 31, 2022
Common Stock, Shares Authorized (in shares) 80,000,000 80,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.001 $ 0.001
Series B Preferred Stock [Member]    
Preferred Units, Authorized (in shares) 65,000,000  
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 0.001  
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) 10  
Preferred Stock, Shares Outstanding (in shares) 0