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Note 8 - Loss Per Share of Common Stock (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   

As of September 30,

 
   

2025

   

2024

 

Warrants

    8,557       8,557  

Options

    50,000       7  

Unvested restricted stock units

    620,164       174,038  
      678,721       182,602