Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Assets
Money market funds	$ 24,724	$ 55,473
Assets Fair Value Total	195,777	220,733
Liabilities
Total liabilities		936
Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position	1,704
Liabilities
Foreign currency forward position		936
Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	11,289	11,107
U.S. Treasuries [Member]
Assets
Trading securities	100,325	99,045
Corporate Debt [Member]
Assets
Securities available-for-sale	57,735	55,108
Level 1 [Member]
Assets
Money market funds	24,724	55,473
Assets Fair Value Total	24,724	55,473
Level 2 [Member]
Assets
Assets Fair Value Total	171,053	165,260
Liabilities
Total liabilities		936
Level 2 [Member] \| Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position	1,704
Liabilities
Foreign currency forward position		936
Level 2 [Member] \| Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	11,289	11,107
Level 2 [Member] \| U.S. Treasuries [Member]
Assets
Trading securities	100,325	99,045
Level 2 [Member] \| Corporate Debt [Member]
Assets
Securities available-for-sale	$ 57,735	$ 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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