v3.26.1
Note 6 - Warrants (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
      

Weighted

  

Weighted

     
      

average

  

average

  

Aggregate

 
  

Warrants

  

price per

  

Remaining term

  

intrinsic

 
  

outstanding

  

share

  

term

  

value(1)

 

Balance, December 31, 2023

  51,590,300  $0.27         

Granted

  4,127,516  $0.30         

Exercised

  (3,278,337) $0.23         

Expired

  (20,823,863) $0.24         

Balance, December 31, 2024

  31,615,616  $0.29         

Granted

  2,263,160  $0.27         

Expired

  (2,634,698) $0.22         

Balance, December 31, 2025

  31,244,078  $0.29   1.7  $5,000 
Schedule Of Assumptions Used To Determine Fair Value Of Warrants [Table Text Block]
  

2025

  

2024

 

Risk free interest rate

  3.67 - 3.73%  4.15 - 5.38%

Expected volatility

  72 - 73%  64 - 87%

Expected dividend yield

      

Forfeiture rate

      

Expected life in years

  .5 - 5   .5 - 5