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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Deferred income tax assets:    
U.S. federal net operating loss carryforward $ 24,692 $ 12,826
State net operating loss carryforward 7,592 3,862
Research and development credits 3,218 1,935
Non-qualified stock options 1,665 75
Accrued bonus 941 297
Operating lease liabilities 570 556
Other 179 173
Gross deferred income tax assets 38,857 19,724
Less: Valuation allowance (38,725) (19,635)
Total deferred income tax assets 132 89
Deferred Tax Liabilities, Net [Abstract]    
Depreciation (132) (89)
Net deferred income tax assets (liabilities) $ 0 $ 0