Note 6 - Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property and equipment, gross	$ 1,915	$ 1,673
Accumulated depreciation	(1,406)	(915)
Property and equipment, net	509	758
Production and Lab Equipment [Member]
Property and equipment, gross	542	513
Tooling [Member]
Property and equipment, gross	562	448
Computer Equipment [Member]
Property and equipment, gross	615	531
Furniture and Fixtures [Member]
Property and equipment, gross	$ 196	$ 181