Share capital (Schedule of warrants outstanding) (Details)	9 Months Ended
	Sep. 30, 2026 $ / shares shares
Warrants issued as part of the IPO [Member]
Class of Warrant or Right [Line Items]
Expiry date	November 15, 2029
Exercise price | $ / shares	$ 232
Number outstanding	19,712
Number exercisable	19,712
Regulation A Warrants [Member]
Class of Warrant or Right [Line Items]
Expiry date	March 10, 2030
Exercise price | $ / shares	$ 140
Number outstanding	324
Number exercisable	324
June 30, 2030 Warrants [Member]
Class of Warrant or Right [Line Items]
Expiry date	June 2, 2030
Exercise price | $ / shares	$ 155
Number outstanding	45,200
Number exercisable	45,200
Series C and D Warrants [Member]
Class of Warrant or Right [Line Items]
Expiry date	June 5, 2031
Exercise price | $ / shares	$ 100
Number outstanding	80,400
Number exercisable	80,400