v3.26.1
Cash and restricted cash - Schedule of deposited with financial institutions (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
 [1]
Dec. 31, 2022
 [1]
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows $ 93,256 $ 50,164 [1] $ 84,093 $ 130,679
Cash on hand 0 0    
Total cash balances 93,256 50,164    
Chinese mainland        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 80,686 41,729    
Chinese mainland | RMB        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 78,546 29,736    
Chinese mainland | US        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 2,134 11,979    
Chinese mainland | GBP        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 6 12    
Chinese mainland | HKD        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 0 2    
Sweden        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 10,164 7,492    
Sweden | US        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 0 29    
Sweden | SEK        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 3,429 5,191    
Sweden | Euro        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 6,735 2,272    
United Kingdom        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 1,118 665    
United Kingdom | GBP        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows 1,118 665    
Others        
Cash and restricted cash        
Cash and restricted cash shown in the consolidated statements of cash flows $ 1,288 $ 278    
[1] Restated (refer to Note 2(c))