Fair Value Measurements and Fair Value of Financial Instruments - Unrealized Gain (Loss) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	$ 344,384	$ 369,956
Unrealized Gains	27	227
Unrealized Losses	(653)	(419)
Fair Value	343,758	369,764
Total cash equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	31,064	29,179
Unrealized Gains	0	2
Unrealized Losses	0	0
Fair Value	31,064	29,181
Total investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	313,320	340,777
Unrealized Gains	27	225
Unrealized Losses	(653)	(419)
Fair Value	312,694	340,583
Money market funds | Total cash equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	31,064	22,646
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	31,064	22,646
U.S. Treasury securities | Total cash equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis		4,984
Unrealized Gains		1
Unrealized Losses		0
Fair Value		4,985
U.S. Treasury securities | Total investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	155,544	225,517
Unrealized Gains	0	55
Unrealized Losses	(471)	(392)
Fair Value	155,073	225,180
U.S. Non-Treasury securities | Total investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	7,102	11,904
Unrealized Gains	0	2
Unrealized Losses	(6)	(5)
Fair Value	7,096	11,901
Commercial paper | Total investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	29,563	18,166
Unrealized Gains	2	26
Unrealized Losses	(18)	(6)
Fair Value	29,547	18,186
Corporate debt securities | Total cash equivalents
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis		1,549
Unrealized Gains		1
Unrealized Losses		0
Fair Value		1,550
Corporate debt securities | Total investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Amortized Cost Basis	121,111	85,190
Unrealized Gains	25	142
Unrealized Losses	(158)	(16)
Fair Value	$ 120,978	$ 85,316