v3.25.4
Income tax - Summary of Reconciliation of Tax (Expense) Benefit and Accounting Loss (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]      
Adjustments in respect of income tax of previous years $ 143 $ (5,006) $ 2,282
Income tax expense reported in the consolidated statement of operations (8,197) (3,699) (8,895)
Sweden      
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]      
Accounting loss before tax (144,918) (198,573) (408,165)
At Sweden’s corporate income tax rate of 20.6% (21.4%) 29,853 40,906 84,082
Effect of tax rates in foreign jurisdictions (737) 654 3,028
Non-taxable income 10 21 170
Non-deductible costs (3,084) (4,003) (4,352)
Adjustments in respect of income tax of previous years 168 2,082 (2,282)
Change in unrecognized deferred taxes (30,475) (43,609) (89,262)
Tax effect of changes in tax rates   3 (304)
Other (3,932) 247 25
Income tax expense reported in the consolidated statement of operations $ (8,197) $ (3,699) $ (8,895)