Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets
Net operating loss carryforwards	$ 37,411	$ 24,657
Tax credits carryforwards	6,968	3,948
Stock-based compensation	1,268	686
Amortization	493	545
Accruals	545	272
Lease incentive liability		17
Lease liability	175
Unrealized gains/losses on investments	4
Other	31	42
Total deferred tax assets	46,895	30,167
Valuation allowance	(46,742)	(30,149)
Net deferred tax assets	153	18
Deferred tax liabilities
Tenant improvement allowance	(12)	(17)
Unrealized gains/losses on investments		(1)
Right of Use Asset	(141)
Total deferred tax liabilities	$ (153)	$ (18)