Marketable Securities - Summary of Available -for-sale Marketable Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Marketable Securities [Line Items]
Amortized Cost	$ 473,681	$ 671,945
Gross Unrealized Gains	844	1,281
Gross Unrealized Losses	(191)	(678)
Estimated Fair Value	474,334	672,548
U.S. Treasury and Other Government - Backed Securities [Member]
Marketable Securities [Line Items]
Amortized Cost	248,233	352,309
Gross Unrealized Gains	190	580
Gross Unrealized Losses	(106)	(273)
Estimated Fair Value	248,317	352,616
Financial Institution Debt Securities [Member]
Marketable Securities [Line Items]
Amortized Cost	146,226	217,544
Gross Unrealized Gains	461	528
Gross Unrealized Losses	(40)	(245)
Estimated Fair Value	146,647	217,827
Corporate Debt Securities [Member]
Marketable Securities [Line Items]
Amortized Cost	79,222	94,924
Gross Unrealized Gains	193	163
Gross Unrealized Losses	(45)	(160)
Estimated Fair Value	$ 79,370	94,927
Other Asset Backed Securities [Member]
Marketable Securities [Line Items]
Amortized Cost		7,168
Gross Unrealized Gains		10
Gross Unrealized Losses		0
Estimated Fair Value		$ 7,178