Income Taxes - Summary of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses - non-current	$ 12,006	$ 2,269
General business credit - non-current	2,682	81
Operating lease right-of-use assets	2,368
Stock based compensation	784
Accruals and reserves	525	105
Fixed assets	396
Other	2
Gross deferred tax assets	18,763	2,455
Valuation allowance	(16,332)	(2,414)	$ (8)
Net deferred tax assets	2,431	41
Fixed asset basis		(41)
Operating lease liabilities	(2,431)
Gross deferred tax liabilities	$ (2,431)	$ (41)