Fair Value of Financial Assets and Liabilities - (Details) - Recurring - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets:
Cash and cash equivalents	$ 122,040	$ 188,493
Marketable securities:
U.S. Treasury obligations	210,580	40,159
Total assets	332,620	228,652
Level 1
Assets:
Cash and cash equivalents	122,040	188,493
Marketable securities:
U.S. Treasury obligations	210,580	40,159
Total assets	$ 332,620	$ 228,652