Financial Instruments - Summary of Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Short-term, Non-governmental Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total short-term investments (available for sale), Cost	$ 242,291	$ 246,070
Total short-term investments (available for sale), Gross Unrealized Gain	588	466
Total short-term investments (available for sale), Gross Unrealized (Loss)	(70)	(278)
Total short-term investments (available for sale), Fair value	242,809	246,258
Short-term, Treasury and Federal Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Total short-term investments (available for sale), Cost	215,396	213,394
Total short-term investments (available for sale), Gross Unrealized Gain	382	258
Total short-term investments (available for sale), Gross Unrealized (Loss)	(60)	(115)
Total short-term investments (available for sale), Fair value	215,718	213,537
Short-term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Total short-term investments (available for sale), Cost	457,687	459,464
Total short-term investments (available for sale), Gross Unrealized Gain	970	724
Total short-term investments (available for sale), Gross Unrealized (Loss)	(130)	(393)
Total short-term investments (available for sale), Fair value	$ 458,527	$ 459,795