Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Less: accumulated amortization and depreciation	$ (959)	$ (615)
Property and equipment, net	263	427
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment	53	33
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment	528	405
Finance Lease Right of Use Assets
Property Plant And Equipment [Line Items]
Property and equipment	557	557
Leasehold Improvement
Property Plant And Equipment [Line Items]
Property and equipment	58	21
Office Furniture
Property Plant And Equipment [Line Items]
Property and equipment	$ 26	$ 26

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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