Stock-based compensation (Schedule of stock option activity) (Details) - CAD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options, Outstanding, beginning of year	812,500	0
Number of options, Granted	485,000	812,500
Number of options, Forfeited	(112,500)
Number of options, Outstanding, end of year	1,185,000	812,500
Number of options, Exercisable, end of year	875,000
Number of options, Unvested	310,000
Weighted- average exercise price beginning of year	$ 1.16	$ 0
Weighted average exercise price, Granted	3.83	1.16
Weighted average exercise price, Forfeited	3.2
Weighted-average exercise price end of year	2.06	$ 1.16
Stock options Exercisable, Weighted-average exercise price end of year	1.32
Stock options Unvested, Weighted average exercise price	$ 3.72
Stock options, Granted, Weighted average remaining contractual life (years)		4 years 9 months 25 days
Stock options, Outstanding, Weighted average remaining contractual life (years)	4 years 2 months 4 days	4 years 9 months 25 days
Stock options, Exercisable, Weighted average remaining contractual life (years)	3 years 11 months 1 day
Unvested, Weighted average remaining contractual life (years)	4 years 11 months 8 days
Stock options, Granted, Aggregate intrinsic value		$ 2.84
Stock options, Outstanding, Aggregate intrinsic value	$ 1.89	$ 2.84	$ 0
Stock options, Exercisable, Aggregate intrinsic value	2.63
Stock options, Unvested, Aggregate intrinsic value	$ 0.23