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Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 2,658 $ 2,012
Less: Accumulated depreciation (1,204) (743)
Property, Plant and Equipment, Net, Total 1,454 1,269
Tools and Equipment    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 1,685 1,523
Computer Equipment and Software    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 100 118
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 254 43
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 29 30
Construction In Process    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 590 $ 298