Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value Measurements
Short-term investments (money market funds, U.S. Government Securities and Agency Investments)	$ 246,571
Recurring | Estimate of fair value measurement
Fair Value Measurements
Total	382,018
Recurring | Money market funds, U.S. Government Securities and Agency Investments | Estimate of fair value measurement
Fair Value Measurements
Cash equivalents (money market funds, U.S. Government Securities and Agency Investments)	136,771	$ 261,090
Recurring | U.S. Government Securities and Agency Investments | Estimate of fair value measurement
Fair Value Measurements
Short-term investments (money market funds, U.S. Government Securities and Agency Investments)	245,247
Recurring | Level 1
Fair Value Measurements
Total	357,018
Recurring | Level 1 | Money market funds, U.S. Government Securities and Agency Investments
Fair Value Measurements
Cash equivalents (money market funds, U.S. Government Securities and Agency Investments)	111,771	$ 261,090
Recurring | Level 1 | U.S. Government Securities and Agency Investments
Fair Value Measurements
Short-term investments (money market funds, U.S. Government Securities and Agency Investments)	245,247
Recurring | Level 2
Fair Value Measurements
Total	25,000
Recurring | Level 2 | Money market funds, U.S. Government Securities and Agency Investments
Fair Value Measurements
Cash equivalents (money market funds, U.S. Government Securities and Agency Investments)	$ 25,000