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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 6,727 $ 5,922
Less accumulated depreciation (4,029) (3,545)
Property and equipment, net 2,698 2,377
Computers and Software    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 657 596
Furniture, Fixtures, and Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 398 400
Manufacturing and Testing Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 4,700 3,874
Construction in Progress    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 40 120
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 932 $ 932