Fair Value Measurements - Summary Financial Assets Measured at Fair Value on a Recurring Basis (Details) - Fair Value Measurements Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, Money market funds	$ 39,303	$ 62,244
Cash equivalents, U.S. Treasury bills	12,893	38,433
Total assets	363,970	443,187
Marketable Debt Securities [Member] | U.S. Treasury Bills [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable debt securities	236,359	287,123
Marketable Debt Securities [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable debt securities	75,415	55,387
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, Money market funds	39,303	62,244
Total assets	39,303	62,244
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, U.S. Treasury bills	12,893	38,433
Total assets	324,667	380,943
Level 2 [Member] | Marketable Debt Securities [Member] | U.S. Treasury Bills [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable debt securities	236,359	287,123
Level 2 [Member] | Marketable Debt Securities [Member] | U.S. Government Agency Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable debt securities	$ 75,415	$ 55,387