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Note 5 - Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Property and equipment, gross $ 1,584 $ 1,416
Accumulated depreciation (677) (440)
Property and equipment, net 907 976
Production and Lab Equipment [Member]    
Property and equipment, gross 500 500
Tooling [Member]    
Property and equipment, gross 403 273
Computer Equipment [Member]    
Property and equipment, gross 503 467
Furniture and Fixtures [Member]    
Property and equipment, gross $ 178 $ 176