Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets
Money market funds	$ 17,196	$ 23,355
Assets Fair Value Total	188,323	195,879
Liabilities
Total liabilities	1,580
Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position		1,847
Liabilities
Foreign currency forward position	1,580
Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	10,726	11,465
U.S. Treasuries [Member]
Assets
Trading securities	100,019	100,772
Corporate Debt [Member]
Assets
Securities available-for-sale	60,063	58,440
Interest Rate Swap [Member]
Assets
Interest rate swaps	319
Level 1 [Member]
Assets
Money market funds	17,196	23,355
Assets Fair Value Total	17,196	23,355
Level 2 [Member]
Assets
Assets Fair Value Total	171,127	172,524
Liabilities
Total liabilities	1,580
Level 2 [Member] \| Foreign Currency Forward Position [Member]
Assets
Foreign currency forward position		1,847
Liabilities
Foreign currency forward position	1,580
Level 2 [Member] \| Mutual Funds Held In Rabbi Trust [Member]
Assets
Mutual funds held in rabbi trust	10,726	11,465
Level 2 [Member] \| U.S. Treasuries [Member]
Assets
Trading securities	100,019	100,772
Level 2 [Member] \| Corporate Debt [Member]
Assets
Securities available-for-sale	60,063	$ 58,440
Level 2 [Member] \| Interest Rate Swap [Member]
Assets
Interest rate swaps	$ 319

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Fair value portion of asset recognized for present right to economic benefit.

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Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

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Fair value of financial and nonfinancial obligations.

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