Summary of significant accounting policies - Research and development incentives and receivable (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Research and development incentives and receivable | |||||
| Percentage of total expenditure | 30.00% | ||||
| Reduction of research and development | $ 4,800 | $ 7,600 | $ 17,400 | $ 28,500 | |
| Research and development incentives receivable | $ 52,358 | $ 52,358 | $ 35,594 | ||
| Expenditure qualified as research and development intensive | |||||
| Research and development incentives and receivable | |||||
| Percentage of surrenderable losses | 26.97% | ||||
| Expenditure not qualified as research and development intensive | |||||
| Research and development incentives and receivable | |||||
| Percentage of total expenditure for Non research and development intensive entity | 20.00% | ||||