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Investments - Summary of Fair Value of Available For Sale Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 72,229	$ 78,526
Unrealized Gains	65	24
Unrealized Losses		(13)
Fair Value	72,294	78,537
U.S. treasury securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	72,229	45,252
Unrealized Gains	65	18
Fair Value	$ 72,294	45,270
U.S. government agency bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost		7,933
Unrealized Losses		(6)
Fair Value		7,927
Corporate bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost		25,341
Unrealized Gains		6
Unrealized Losses		(7)
Fair Value		$ 25,340

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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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