Certain Balance Sheet Accounts - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,953	$ 3,776
Less accumulated depreciation and amortization	(2,215)	(1,906)
Property and equipment, net	1,738	1,870
Tooling and manufacturing equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	2,481	2,333
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	579	579
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	654	625
Software
Property, Plant and Equipment [Line Items]
Total property and equipment	213	213
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 26	$ 26