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Note 8 - Equity (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Schedule of Stock by Class [Table Text Block]
  

As of

 
  

December 31, 2024

  

December 31, 2023

 
         

Common stock options and warrants

  7,731   6,056 

Debt with conversion feature at $30 per share of common stock

  1,153   1,267 

Total number of potentially dilutive shares excluded from the diluted net (loss) per share calculation

  8,884   7,323