v3.25.1
Summary of significant accounting policies - Revenue by major product line and Foreign Currency translation (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
¥ / $
Dec. 31, 2023
USD ($)
¥ / $
Dec. 31, 2022
USD ($)
¥ / $
Dec. 31, 2024
$ / $
Dec. 31, 2023
$ / $
Dec. 31, 2022
$ / $
Summary of significant accounting policies            
Revenues $ 10,073 $ 3,569 $ 3,875      
Foreign exchange 7.19 7.08   0.62 0.68  
Foreign Currency Exchange Rate 7.12 6.56 6.73 0.66 0.66 0.7
Interest On Loans            
Summary of significant accounting policies            
Revenues $ 3,308 $ 2,313 $ 2,451      
Property lease and management            
Summary of significant accounting policies            
Revenues 1,780 1,069 1,106      
Applications, technology & services            
Summary of significant accounting policies            
Revenues 151 $ 187 $ 318      
Consultancy services for insurance products            
Summary of significant accounting policies            
Revenues 4,478          
Advisory and referral services            
Summary of significant accounting policies            
Revenues $ 356