Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss carryforwards	$ 104,174	$ 13,448
Tax credits	3,842	994
Lease liability	5,085	579
Other	892	120
Total gross deferred income tax assets	113,993	15,141
Deferred tax liabilities:
ROU asset	(5,198)	(579)
Total gross deferred income tax liabilities	(5,198)	(579)
Net deferred income tax assets	108,794	14,562
Valuation allowance	(108,794)	(14,562)	$ (6,551)
Deferred tax asset, net of allowance	$ 0	$ 0