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Note 12 - Capital Stock (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
  

Shares Under Warrants

  

Weighted Average Exercise Price

  

Weighted Average Remaining Contractual Life (in years)

  

Aggregate Intrinsic Value of Vested Warrants

 
                 

Outstanding as of January 1, 2022

  105,556  $9.95   3.5  $1,982,342 

Issued

  -             

Exercised

  -             

Expired

  -             
                 

Outstanding as of December 31, 2022

  105,556  $9.95   2.5  $1,746,952 
                 

Issued

  -             

Exercised

  -             

Expired

  -             
                 

Outstanding as of December 31, 2023

  105,556  $9.95   1.5  $610,114