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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
  

Year Ended December 31,

 

Excluded potentially dilutive weighted average securities (1):

 

2025

  

2024

 
         

Unvested restricted stock

  137,214   55,469 

Financing warrants to purchase common stock

  242,290   67,388 

Total potential dilutive weighted average securities

  379,504   122,857