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Income taxes - Schedule of Expense (Benefit) for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Current      
Canadian $ (30,044) $ (18,460) $ (29,591)
Foreign (201) 671 0
Current tax expense (benefit) (30,245) (17,789) (29,591)
Deferred and other      
Canadian 0 749 4,526
Foreign (938) (20,498) (2,566)
Deferred tax expense (benefit) (938) (19,749) 1,960
Income tax recovery $ (31,183) $ (37,538) $ (27,631)