v3.26.1
Income Taxes - Reconciliation of Income Tax Expense on Pretax Income at Statutory Rate and Income Tax Expense (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Reconciliation Of Income Taxes [Line Items]      
Differences between Cayman and other statutory tax rates   $ 16,107 $ 9,979
Permanent differences   365 206
Temporary differences   (2,703) (1,614)
Alternative minimum tax   1 1
Income tax on undistributed earnings   193 0
Net changes in income tax credit   (101) (205)
Net changes in valuation allowance of deferred income tax assets   5,014 3,260
Net operating loss carryforwards   497 (1,805)
Liabilities related to unrealized tax benefits   (42) 5,482
Adjustment of prior years' taxes and others   (1,171) (7,129)
Income tax expense $ 17,492 18,160 8,175
Tax at Hong Kong Statutory Rate 16.50%    
Tax at Hong Kong Statutory Rate, Amount $ 23,121    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount   16,107 9,979
Other, Amount   (1,171) (7,129)
Changes in Valuation Allowances, Amount   $ 5,014 $ 3,260
Changes in Unrecognized Tax Benefits ,Percent (0.062)    
Changes in Unrecognized Tax Benefits ,Amount $ (8,647)    
Effective Income Tax Rate Reconciliation, Percent 12.50% 16.90% 13.40%
Income Tax Expense (Benefit) $ 17,492 $ 18,160 $ 8,175
Cayman Island      
Reconciliation Of Income Taxes [Line Items]      
Differences between Cayman and other statutory tax rates (3,482)    
Adjustment of prior years' taxes and others $ 290    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent (2.50%)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ (3,482)    
Nontaxable or nondeductible items, Percent 5.10%    
Nontaxable or nondeductible items, Amount $ 7,078    
Other, Percent 0.20%    
Other, Amount $ 290    
Macau      
Reconciliation Of Income Taxes [Line Items]      
Differences between Cayman and other statutory tax rates (2,075)    
Adjustment of prior years' taxes and others $ (131)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent (1.50%)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ (2,075)    
Other, Percent (0.10%)    
Other, Amount $ (131)    
China      
Reconciliation Of Income Taxes [Line Items]      
Differences between Cayman and other statutory tax rates 3,154    
Net changes in valuation allowance of deferred income tax assets 762    
Adjustment of prior years' taxes and others $ (202)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 2.30%    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ 3,154    
Other, Percent (0.10%)    
Other, Amount $ (202)    
Tax Credits, Percent 3.40%    
Tax Credits, Amount $ 4,825    
Changes in Valuation Allowances, Percent 0.50%    
Changes in Valuation Allowances, Amount $ 762    
U.S      
Reconciliation Of Income Taxes [Line Items]      
Differences between Cayman and other statutory tax rates (1,855)    
Net changes in valuation allowance of deferred income tax assets 2,589    
Adjustment of prior years' taxes and others $ 31    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent (1.30%)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ (1,855)    
Other, Percent 0.00%    
Other, Amount $ 31    
Changes in Valuation Allowances, Percent 1.90%    
Changes in Valuation Allowances, Amount $ 2,589    
Other Foreign Jurisdictions      
Reconciliation Of Income Taxes [Line Items]      
Differences between Cayman and other statutory tax rates 1,046    
Adjustment of prior years' taxes and others $ 638    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 0.80%    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ 1,046    
Other, Percent 0.50%    
Other, Amount $ 638