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Income taxes - Schedule of Canadian Federal and Provincial Statutory Income Tax Rates Reconciliation of Effective Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Abstract]      
Net loss before income taxes $ (177,595) $ (200,395) $ (174,029)
Combined statutory tax rate   27.00% 27.00%
Expected income tax recovery at statutory rates   $ (54,107) $ (46,988)
Stock-based compensation   18,226 17,081
Change in valuation allowance 12,321 15,205 11,485
Tax rate differential   1,077 (1,042)
Prior year tax assessments and adjustments   774 (344)
Change due to SR&ED (6,002) (8,224) (7,428)
Gain on contingent consideration   (12,771) 0
Capital treatment of items   2,205 0
Other 252 77 (395)
Income tax recovery $ (31,183) $ (37,538) $ (27,631)