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Note 11 - Warrants (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Year Ended December 31, 2023

 
  

Warrants (Equity)

 
          

Weighted

 
      

Weighted

  

Average

 
      

Average Exercise

  

Remaining

 
  

Amount

  

Price

  

Contractual Life

 

Balance January 1, 2023

  5,824,027  $6.56   4.21 

Warrants expired

  (1,237,025)  12.70   - 

Balance December 31, 2023

  4,587,002  $4.90   4.11 

Year Ended December 31, 2022

 
  

Warrants (Equity)

 
          

Weighted

 
      

Weighted

  

Average

 
      

Average Exercise

  

Remaining

 
  

Amount

  

Price

  

Contractual Life

 

Balance January 1, 2022

  1,367,737  $13.44   1.73 

Warrants issued

  1,950,502   4.60   5.00 

Warrants exercised

  (1,950,502)  4.60   4.86 

Warrants expired

  (130,712)  10.44   - 

Warrants reclassified

  4,587,002   4.90   4.73 

Balance December 31, 2022

  5,824,027  $6.56   4.21