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Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Mainland China Contribution Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Contributions for employee benefits | $ 1.3 | $ 1.2 | $ 2.6 | $ 2.4

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