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Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	$ 164,296	$ 242,359
Gross Unrealized Holding Gains	1	14
Gross Unrealized Holding Losses	(47)	(286)
Aggregate Fair Value	164,250	242,087
Level 1 [Member] | Money Market Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	102,471	139,450
Aggregate Fair Value	102,471	139,450
Level 2 [Member] | Commercial Paper [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	29,679	42,467
Gross Unrealized Holding Losses	(12)	(82)
Aggregate Fair Value	29,667	42,385
Level 2 [Member] | Government Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	32,146	24,804
Gross Unrealized Holding Gains	1
Gross Unrealized Holding Losses	(35)	(204)
Aggregate Fair Value	$ 32,112	24,600
Level 2 [Member] | Corporate Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost		35,638
Gross Unrealized Holding Gains		14
Aggregate Fair Value		$ 35,652

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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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