Cash and cash equivalents and restricted cash - Currency profiles of group's cash and bank balances (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
|---|---|---|---|
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | $ 25,827 | $ 9,326 | $ 3,766 |
| US$ | |||
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | 14,248 | 9,047 | |
| Renminbi ("RMB") | |||
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | 7,203 | ||
| Singapore dollar ("SGD") | |||
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | 687 | 167 | |
| Hong Kong dollar ("HK$") | |||
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | 3,135 | 104 | |
| Japanese Yen | |||
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | 313 | ||
| Others | |||
| Cash and cash equivalents and restricted cash | |||
| Reconciliation of cash and bank balances | $ 241 | $ 8 |