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Marketable Securities - Summary of Marketable Securities by Security (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Marketable Securities [Line Items]
Amortized Cost	$ 1,107,854	$ 972,670
Gross Unrealized Gains	2,593	736
Gross Unrealized Losses	(240)	(795)
Fair Value	1,110,207	972,611
Commercial paper [Member]
Marketable Securities [Line Items]
Amortized Cost	107,889	251,473
Gross Unrealized Gains	17	12
Gross Unrealized Losses	(22)	(176)
Fair Value	107,884	251,309
Corporate bonds [Member]
Marketable Securities [Line Items]
Amortized Cost	772,457	468,673
Gross Unrealized Gains	2,233	532
Gross Unrealized Losses	(184)	(588)
Fair Value	774,506	468,617
Government and agency securities [Member]
Marketable Securities [Line Items]
Amortized Cost	207,684	162,783
Gross Unrealized Gains	340	132
Gross Unrealized Losses	(34)	(29)
Fair Value	207,990	162,886
US Treasury Securities [Member]
Marketable Securities [Line Items]
Amortized Cost	19,824	89,741
Gross Unrealized Gains	3	60
Gross Unrealized Losses	0	(2)
Fair Value	$ 19,827	$ 89,799

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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