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Note 5 - Property and Equipment, Net (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

June 30,

  

December 31,

 
  

2022

  

2021

 

Production and lab equipment

 $500  $500 

Tooling

  403   273 

Computer equipment

  503   467 

Furniture, fixtures and improvements

  178   176 
   1,584   1,416 

Accumulated depreciation

  (677)  (440)

Property and equipment, net

 $907  $976