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Stock-based compensation (Tables)
12 Months Ended
Dec. 31, 2025
Share-based Payment Arrangement [Abstract]  
Schedule of stock option activity [Table Text Block]
    Number of
options
    Weighted
average
exercise price
$
    Weighted
average
remaining
contractual life
(years)
    Aggregate
intrinsic value
$
 
Outstanding at December 31, 2023   812,500     0.88     4.82     2.15  
Granted   485,000     2.66     -     -  
Forfeited   (112,500 )   2.22     -     -  
Outstanding at December 31, 2024   1,185,000     1.47     4.18     1.18  
Granted   1,510,000     2.46     4.81     -  
Exercised   (145,000 )   1.11     -     -  
Forfeited   (45,000 )   2.76     -     -  
                         
Outstanding at December 31, 2025   2,505,000     2.05     2.75     -  
Exercisable at December 31, 2025   1,313,750     1.81     3.49     -  
Unvested at December 31, 2025   1,191,250     2.33     4.79     -  
Schedule of assumptions used to estimate the fair value of options [Table Text Block]
  2025 2024
Expected dividend yield - -
Risk-free interest rate 3.68% - 4.02% 2.95% - 4.24%
Expected term (in years) 5 years 5 years
Expected volatility 87.31% - 101.54% 95% - 100%