Condensed consolidated financial statement details - Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 88,126	$ 111,840
Less: Accumulated depreciation and amortization	(79,440)	(98,513)
Property and equipment, net	8,686	13,327
Depreciation	6,200	8,500	$ 9,800
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	23,818	32,472
Production, engineering and other equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	38,574	46,475
Tooling [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	5,678	9,033
Computers and software [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	13,896	17,258
Furniture and office equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	4,575	4,879
Tradeshow Equipment and other [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	1,502	1,664
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 83	$ 59