Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis by Level Within Fair Value Hierarchy (Details) - Recurring Basis - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Total assets	$ 318,905
Convertible Preferred Unit Warrant Liability
Liabilities:
Liabilities		$ 314
Government Treasury and Agency Securities
Assets:
Total assets	7,600
Corporate Securities and Commercial Paper
Assets:
Total assets	171,842
Money Market Funds
Assets:
Total assets	115,410	5,508
US Treasuries
Assets:
Total assets	24,053
Level 1
Assets:
Total assets	139,463
Level 1 | Money Market Funds
Assets:
Total assets	115,410	5,508
Level 1 | US Treasuries
Assets:
Total assets	24,053
Level 2
Assets:
Total assets	179,442
Level 2 | Government Treasury and Agency Securities
Assets:
Total assets	7,600
Level 2 | Corporate Securities and Commercial Paper
Assets:
Total assets	$ 171,842
Level 3 | Convertible Preferred Unit Warrant Liability
Liabilities:
Liabilities		$ 314