Income Taxes - Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 41,443	$ 11,277
Research and development tax credits	5,586	1,855
Deferred revenue	3,117	4,443
Accrued expenses	477	153
Intangibles and fixed assets	2,137	2,483
Lease liability	3,291	263
Stock-based compensation	3,668	969
Total deferred tax assets	59,719	21,443
Less valuation allowance	(56,693)	(21,316)
Net deferred tax assets	3,026	127
Deferred tax liabilities:
Right-of-use asset	(3,026)	(127)
Total deferred tax liabilities	(3,026)	(127)
Net deferred tax assets	$ 0	$ 0