v3.26.1
Income Taxes - Reconciliation of the differences between the statutory EIT rate applicable to profits of the consolidated entities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amount      
Permanent book-tax differences $ 9,861    
Change in valuation allowance (11,331)    
Effect of preferential tax rate for qualified HNTE entities (1) (2,936)    
Additional deduction for research and development expenditures (4,469)    
Share-based compensation 866    
PRC withholding income tax on interest income and investment income 1,943    
Effective Tax Rates $ 1,953 $ 2,145 $ 3,249
Tax Jurisdiction of Domicile [Extensible Enumeration] PRC entities    
Percent      
PRC Statutory income tax rate   25.00% 25.00%
Statutory tax rates in difference between PRC and Hong Kong   (35.10%) (2.50%)
Permanent book-tax differences (in percent) 16.50%    
Change in valuation allowance (18.90%) (16.40%) (14.40%)
Effect of preferential tax rate for qualified HNTE entities (1) (in percent) 4.90%    
Additional deduction for research and development expenditures (in percent) (7.50%) (62.80%) 9.30%
Share-based compensation 1.40% 141.20% (19.70%)
PRC withholding income tax on interest income and investment income (in percent) 3.20%    
Effective Tax Rates 3.30% 30.00% (5.70%)
PRC entities      
Amount      
PRC Statutory income tax rate $ 14,961    
Percent      
PRC Statutory income tax rate 25.00%    
Hong Kong      
Amount      
Statutory tax rates in difference between PRC and Hong Kong $ (2,497)    
Permanent book-tax differences (6,840)    
Change in valuation allowance 1,532    
Other $ 457    
Percent      
Statutory tax rates in difference between PRC and Hong Kong (4.20%)    
Permanent book-tax differences (in percent) (11.40%)    
Change in valuation allowance 2.60%    
Other (in percent) 0.80%    
Other foreign jurisdictions      
Amount      
Other $ 406    
Percent      
Other (in percent) 0.70%