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Note 11 - Warrants (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Warrants, Valuation Assumptions [Table Text Block]
   

For the three months ended March 31,

 

Description

 

2024

   

2023

 

Dividend-yield

    - %     - %

Risk-free interest rate

    4.23 %     4.41 %

Expected volatility

    101.36 %     125.32 %

Expected life (years)

    2.00       2.00  

Exercise price per share

  $ 0.01     $ 0.01  

Market value per share on grant date

  $ 5.24     $ 3.96  

Fair value per share on grant date

  $ 5.23     $ 3.95  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

Warrants Outstanding & Exercisable

   

Weighted - Average Exercise Price

   

Average Remaining Term in Years

 

Outstanding December 31, 2023

    530     $ 11.70       5.77  

Granted

    113       0.01          

Exercised

    (113 )     0.01          

Outstanding March 31, 2024

    530     $ 11.70       5.54