Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets
Money market funds	$ 55,473	$ 18,634
Assets Fair Value Total	220,733	155,396
Liabilities
Total liabilities	936
Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	11,107	10,485
U.S. Treasuries [Member]
Assets
Trading securities, Fair value	99,045	99,682
Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position		1,901
Liabilities
Foreign currency forward position	936
Corporate Debt [Member]
Assets
Securities available-for-sale	55,108	24,694
Level 1 [Member]
Assets
Money market funds	55,473	18,634
Assets Fair Value Total	55,473	18,634
Level 2 [Member]
Assets
Assets Fair Value Total	165,260	136,762
Liabilities
Total liabilities	936
Level 2 [Member] \| Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	11,107	10,485
Level 2 [Member] \| U.S. Treasuries [Member]
Assets
Trading securities, Fair value	99,045	99,682
Level 2 [Member] \| Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position		1,901
Liabilities
Foreign currency forward position	936
Level 2 [Member] \| Corporate Debt [Member]
Assets
Securities available-for-sale	$ 55,108	$ 24,694

Money market funds fair value.

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