Certain Balance Sheet Accounts - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 4,151	$ 4,165
Less accumulated depreciation and amortization	(3,317)	(3,057)
Property and equipment, net	834	1,108
Tooling and manufacturing equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	2,731	2,731
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	639	639
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	640	660
Software
Property, Plant and Equipment [Line Items]
Total property and equipment	106	106
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 35	$ 29