Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Aggregated Fair Value	$ 371,758
Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	370,493	$ 361,117
Short-term investments, Gross Unrealized Holding Gains	1,276	439
Short-term investments, Gross Unrealized Holding Losses	(11)	(254)
Short-term investments, Aggregated Fair Value	371,758	361,302
Total cash equivalents and marketable securities	371,758	361,302
Recurring | Marketable securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Aggregated Fair Value	332,363	262,709
Recurring | Cash equivalents
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Aggregated Fair Value	39,395	98,593
Recurring | Level 1 | Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	25,447	493
Short-term investments, Aggregated Fair Value	25,447	493
Recurring | Level 2 | Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	58,250	94,261
Short-term investments, Gross Unrealized Holding Gains	44
Short-term investments, Gross Unrealized Holding Losses	(1)	(55)
Short-term investments, Aggregated Fair Value	58,293	94,206
Recurring | Level 2 | U.S. government bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	192,065	137,976
Short-term investments, Gross Unrealized Holding Gains	929	250
Short-term investments, Gross Unrealized Holding Losses	(5)	(142)
Short-term investments, Aggregated Fair Value	192,989	138,084
Recurring | Level 2 | Agency bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	60,421	45,481
Short-term investments, Gross Unrealized Holding Gains	251	152
Short-term investments, Gross Unrealized Holding Losses	(2)	(44)
Short-term investments, Aggregated Fair Value	60,670	45,589
Recurring | Level 2 | Corporate debt securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	4,636	3,177
Short-term investments, Gross Unrealized Holding Gains	35
Short-term investments, Gross Unrealized Holding Losses	(3)	(12)
Short-term investments, Aggregated Fair Value	4,668	3,165
Recurring | Level 2 | U.S. Treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	25,711	71,754
Short-term investments, Gross Unrealized Holding Gains	13	36
Short-term investments, Gross Unrealized Holding Losses		(1)
Short-term investments, Aggregated Fair Value	25,724	71,789
Recurring | Level 2 | Agency discount securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Short-term investments, Amortized Cost	3,963	7,975
Short-term investments, Gross Unrealized Holding Gains	4	1
Short-term investments, Aggregated Fair Value	$ 3,967	$ 7,976