Financial Instruments - Summary of Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Total short-term investments (available for sale), Fair value	$ 511,211	$ 459,795
Short-term, Non-governmental Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total short-term investments (available for sale), Cost	329,108	246,070
Total short-term investments (available for sale), Gross Unrealized Gain	1,105	466
Total short-term investments (available for sale), Gross Unrealized (Loss)	(112)	(278)
Total short-term investments (available for sale), Fair value	330,101	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	180,631	213,394
Total short-term investments (available for sale), Gross Unrealized Gain	529	258
Total short-term investments (available for sale), Gross Unrealized (Loss)	(50)	(115)
Total short-term investments (available for sale), Fair value	181,110	213,537
Short-term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Total short-term investments (available for sale), Cost	509,739	459,464
Total short-term investments (available for sale), Gross Unrealized Gain	1,634	724
Total short-term investments (available for sale), Gross Unrealized (Loss)	(162)	(393)
Total short-term investments (available for sale), Fair value	$ 511,211	$ 459,795