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

2021

   

2020

 

Raw materials

  $ 651     $ 473  

Work in process and finished goods

    1,000       758  

Inventory reserves

    (87 )     (82 )

Total

  $ 1,564     $ 1,149