Income Tax - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforward	$ 55,488	$ 36,740
Research and development credits	7,706	3,319
Deferred rent	0	214
Accruals and other	5,185	2,636
Intangible	6,369	6,836
Lease liability	3,482	0
Gross deferred tax assets	78,230	49,745
Less valuation allowance	(74,816)	(49,507)
Total deferred tax assets	3,414	238
Deferred tax liabilities:
Fixed assets	(114)	(238)
Right of use assets	(3,300)	0
Total deferred tax liabilities	3,414	238
Deferred income taxes, net	$ 0	$ 0