Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial Assets:
Financial assets, fair value	$ 61,888	$ 86,874
Corporate bonds
Financial Assets:
Financial assets, fair value	4,508	12,574
Commercial paper
Financial Assets:
Financial assets, fair value	50,576	65,412
Level 1
Financial Assets:
Financial assets, fair value	6,804	8,888
Level 2
Financial Assets:
Financial assets, fair value	55,084	77,986
Level 2 | Corporate bonds
Financial Assets:
Financial assets, fair value	4,508	12,574
Level 2 | Commercial paper
Financial Assets:
Financial assets, fair value	50,576	65,412
Money market funds
Financial Assets:
Financial assets, fair value	5,800	8,888
Money market funds | Level 1
Financial Assets:
Financial assets, fair value	5,800	$ 8,888
U.S. treasury securities
Financial Assets:
Financial assets, fair value	1,004
U.S. treasury securities | Level 1
Financial Assets:
Financial assets, fair value	$ 1,004