Quantitative and qualitative disclosure about market risk - Provision for other receivables and prepayments (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Quantitative and qualitative disclosure about market risk | ||
| Balance as of January 1 | $ 8 | $ 135 |
| Provisions for doubtful accounts | 10 | 8 |
| Recoveries of amounts previously charged off | (8) | (135) |
| Balance as of December 31 | $ 10 | $ 8 |