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Income Taxes - Singapore subsidiary commitments (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Tax [Line Items] |  |  |
Undistributed Earnings of Foreign Subsidiaries | $ 339,700 |  |
withholding tax | 23,000 |  |
Inland Revenue, Singapore (IRAS) [Member] |  |  |
Income Tax [Line Items] |  |  |
Income tax benefit estimate attributable to the tax status of subsidiary | $ 27,700 | $ 19,700 | $ 24,800
Income tax expense benefit per diluted share | $ 0.18 | $ 0.13 | $ 0.17
additional effective tax rate benefit | $ 17,100 | $ 12,100 | $ 14,200

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