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Note 7 - Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

Number of

   

Weighted

 
   

Common Stock

   

Average

 
   

Equivalents

   

Exercise Price

 

Balance as of December 31, 2024

    2,467,104     $ 3.10  

Balance as of March 31, 2025

    2,467,104     $ 3.10