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Condensed consolidated financial statement details - Property and Equipment, Net (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2021
Property, Plant and Equipment [Line Items]        
Gross property and equipment $ 116,443     $ 121,777
Less: Accumulated depreciation and amortization (101,142)     (102,774)
Property and equipment, net 15,301     19,003
Depreciation 9,800 $ 9,800 $ 14,500  
Leasehold Improvements [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment 32,916     33,764
Production, engineering and other equipment [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment 46,289     45,641
Tooling [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment 11,743     13,537
Computers and software [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment 18,135     20,771
Furniture and office equipment [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment 4,879     5,614
Tradeshow Equipment and other [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment 1,970     1,970
Construction in Progress [Member]        
Property, Plant and Equipment [Line Items]        
Gross property and equipment $ 511     $ 480