Fair Value Measurements and Fair Value of Financial Instruments - Schedule of Debt Securities, Available-for-sale, Unrealized Gain (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	$ 379,705	$ 427,647
Unrealized Gains	10	40
Unrealized Losses	(1,306)	(1,291)
Fair Value	378,409	426,396
Total cash equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	33,984	53,208
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	33,984	53,208
Total cash equivalents | Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	33,984	53,208
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	33,984	53,208
Total investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	345,721	374,439
Unrealized Gains	10	40
Unrealized Losses	(1,306)	(1,291)
Fair Value	344,425	373,188
Total investments | U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	247,784	228,563
Unrealized Gains	1	25
Unrealized Losses	(1,133)	(896)
Fair Value	246,652	227,692
Total investments | U.S. Non-Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	22,778	10,699
Unrealized Gains	0	6
Unrealized Losses	(37)	(3)
Fair Value	22,741	10,702
Total investments | Commercial paper
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	25,527	55,561
Unrealized Gains	0	3
Unrealized Losses	(22)	(131)
Fair Value	25,505	55,433
Total investments | Corporate debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	49,632	79,616
Unrealized Gains	9	6
Unrealized Losses	(114)	(261)
Fair Value	$ 49,527	$ 79,361