Share-based compensation - Movements in Share-based Compensation Reserve (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Changes In Share-Based Payments [Abstract] | |||
| Balance at beginning of period | $ 56,805 | $ 40,317 | $ 25,075 |
| Movement in the period | 16,205 | 16,488 | 15,242 |
| Balance at end of period | $ 73,010 | $ 56,805 | $ 40,317 |