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Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 3,258 $ 2,658
Less: Accumulated depreciation (1,541) (1,204)
Property and equipment, net 1,717 1,454
Tools and Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 2,259 1,685
Computer Equipment and Software    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 100 100
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 254 254
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 34 29
Construction In Process    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 611 $ 590