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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 7,364 $ 7,557
Less accumulated depreciation (5,059) (5,050)
Property and equipment, net 2,305 2,507
Manufacturing and Testing Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 5,485 5,371
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 848 848
Computers and Software    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 542 811
Furniture, Fixtures, and Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 427 427
Vehicles    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 56 55
Construction in Process    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 6 $ 45