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Note 2 - Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
  

March 31, 2026

 

Warrants liabilities as of January 1, 2026

 $ 

Change in fair value of warrants

   

Warrants liabilities as of March 31, 2026

 $ 
  

March 31, 2025

 

Warrants liabilities as of January 1, 2025

 $(109)

Change in fair value of warrants

  (55)

Warrants liabilities as of March 31, 2025

 $(54

)