Share capital (Schedule of warrants outstanding) (Details)	3 Months Ended
	Mar. 31, 2025 $ / shares shares
November 15, 2029 [Member]
Class of Warrant or Right [Line Items]
Expiry date	November 15, 2029
Exercise price | $ / shares	$ 4.64
Number outstanding | shares	1,115,500
March 10, 2030 [Member]
Class of Warrant or Right [Line Items]
Expiry date	March 10, 2030
Exercise price | $ / shares	$ 2.8
Number outstanding | shares	1,485,000