Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Assets
Money market funds	$ 77,532	$ 55,473
Assets Fair Value Total	246,264	220,733
Liabilities
Total liabilities		936
Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position	2,619
Liabilities
Foreign currency forward position		936
Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	10,269	11,107
U.S. Treasuries [Member]
Assets
Trading securities	100,167	99,045
Corporate Debt [Member]
Assets
Securities available-for-sale	55,677	55,108
Level 1 [Member]
Assets
Money market funds	77,532	55,473
Assets Fair Value Total	77,532	55,473
Level 2 [Member]
Assets
Assets Fair Value Total	168,732	165,260
Liabilities
Total liabilities		936
Level 2 [Member] \| Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position	2,619
Liabilities
Foreign currency forward position		936
Level 2 [Member] \| Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	10,269	11,107
Level 2 [Member] \| U.S. Treasuries [Member]
Assets
Trading securities	100,167	99,045
Level 2 [Member] \| Corporate Debt [Member]
Assets
Securities available-for-sale	$ 55,677	$ 55,108

Money market funds fair value.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value of financial and nonfinancial obligations.

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