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Note 5 - Inventories, Net (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

 

December 31,
 
  

2021

  

2020

 

Finished goods

 $1,027  $1,249 

Work in process

  2   64 

Raw materials

  537   1,342 

Inventories - net

 $1,566  $2,655