Fair Value Measurements and Fair Value of Financial Instruments - Financial Assets Measured at Fair Value On a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets measured at fair value	$ 449,902	$ 493,260
Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets measured at fair value		232,813
U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets measured at fair value		260,447
Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	72,820	232,813
Total investments	377,082	260,447
Total assets measured at fair value	449,902	493,260
Fair Value, Recurring | Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	56,320	232,813
Fair Value, Recurring | Commercial paper
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	9,486
Total investments	52,128
Fair Value, Recurring | Corporate debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	7,014
Total investments	62,349
Fair Value, Recurring | U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total investments	262,605	260,447
Level 1 | Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	56,320	232,813
Total investments	0	0
Total assets measured at fair value	56,320	232,813
Level 1 | Fair Value, Recurring | Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	56,320	232,813
Level 1 | Fair Value, Recurring | Commercial paper
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0
Total investments	0
Level 1 | Fair Value, Recurring | Corporate debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0
Total investments	0
Level 1 | Fair Value, Recurring | U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total investments	0	0
Level 2 | Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	16,500	0
Total investments	377,082	260,447
Total assets measured at fair value	393,582	260,447
Level 2 | Fair Value, Recurring | Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0	0
Level 2 | Fair Value, Recurring | Commercial paper
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	9,486
Total investments	52,128
Level 2 | Fair Value, Recurring | Corporate debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	7,014
Total investments	62,349
Level 2 | Fair Value, Recurring | U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total investments	262,605	260,447
Level 3 | Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0	0
Total investments	0	0
Total assets measured at fair value	0	0
Level 3 | Fair Value, Recurring | Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0	0
Level 3 | Fair Value, Recurring | Commercial paper
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0
Total investments	0
Level 3 | Fair Value, Recurring | Corporate debt securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total cash equivalents	0
Total investments	0
Level 3 | Fair Value, Recurring | U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total investments	$ 0	$ 0