Cash, Cash Equivalents, Restricted Cash And Investments - Summary of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Less than 12 Months, Fair Value	$ 425,697	$ 67,600
Less than 12 Months, Gross Unrealized Losses	(211)	(111)
12 Months or Longer, Fair value	5,980	28,383
12 Months or Longer, Gross Unrealized Losses	(10)	(60)
Total, Fair value	431,677	95,983
Total, Gross Unrealized Loses	(221)	(171)
Corporate Notes and Bonds [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or Longer, Fair value	3,985	24,396
12 Months or Longer, Gross Unrealized Losses	(5)	(53)
Total, Fair value	3,985	24,396
Total, Gross Unrealized Loses	(5)	(53)
US government and Agency
Debt Securities, Available-for-Sale [Line Items]
Less than 12 Months, Fair Value	425,697	67,600
Less than 12 Months, Gross Unrealized Losses	(211)	(111)
12 Months or Longer, Fair value	1,995	3,987
12 Months or Longer, Gross Unrealized Losses	(5)	(7)
Total, Fair value	427,692	71,587
Total, Gross Unrealized Loses	$ (216)	$ (118)