Property, Plant and Equipment - Lease liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Lease liabilities | ||
| Current portion (classified under other current liabilities) | $ 1,752 | $ 3,708 |
| Non-current portion (classified under other non-current liabilities) | 2,466 | 3,452 |
| Total lease liabilities | $ 4,218 | $ 7,160 |