Stock-based compensation (Tables)

9 Months Ended

Sep. 30, 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, 2024	1,185,000		1.47	4.18	1.18
Granted	825,000		2.99	4.81	-
Exercised	(145,000	)	1.11	-	-
Forfeited	(7,500	)	2.76	-	-
Outstanding at September 30, 2025	1,857,500		2.17	4.06	0.15
Exercisable at September 30, 2025	1,132,500		1.61	3.57	0.71
Unvested at September 30, 2025	725,000		3.04	4.18	-

Schedule of assumptions used to estimate the fair value of options [Table Text Block]

		September 30, 2025
		Weighted-average
Exercise price	$	2.99
Share price	$	2.99
Dividend		-
Risk-free interest		3.89%
Estimated life (years)		5.01
Expected volatility		94.61%