Income tax - Summary of Net Operating Loss Carryforwards (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Major components of tax expense (income) [abstract] | ||
| One year | $ 27,446 | $ 15,853 |
| Two years | 56,969 | 23,958 |
| Three years | 78,915 | 49,729 |
| Four years | 89,906 | 68,886 |
| Thereafter and unlimited | 190,756 | 189,107 |
| Net operating loss carryforwards | $ 443,992 | $ 347,533 |