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Employee Benefit Plans - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Mainland China Contribution Plan        
Defined Benefit Plan Disclosure [Line Items]        
Contributions for employee benefits $ 1.4 $ 1.4 $ 4.0 $ 3.8