Certain Balance Sheet Accounts - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,947	$ 3,370
Less: accumulated depreciation and amortization	(2,652)	(3,268)
Property and equipment, net	295	102
Tooling and manufacturing equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	2,249	2,618
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	455	322
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	194	289
Software
Property, Plant and Equipment [Line Items]
Total property and equipment	46	106
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3	$ 35