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Income Tax - Schedule of Provision for Income Taxes and Income Taxes Computed (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
Statutory rate $ (16,530) $ (15,478) $ (5,647)
State tax (5,383) (5,158) (2,351)
Other permanent items 30 (280) 17
Federal return to provision 144 0 0
Research and development credit (4,539) 0 (692)
Change in valuation allowance 25,309 20,916 8,673
Stock-based compensation 969 0 0
Provisions for income taxes $ 0 $ 0 $ 0