v3.25.1
Quantitative and qualitative disclosure about market risk - Geographical area (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets      
Total $ 10,073 $ 3,569 $ 3,873
Hong Kong      
Revenues from External Customers and Long-Lived Assets      
Total 10,047 3,442 3,595
Australia      
Revenues from External Customers and Long-Lived Assets      
Total   $ 127 $ 278
PRC      
Revenues from External Customers and Long-Lived Assets      
Total $ 26