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Note 5 - Inventories
12 Months Ended
Dec. 31, 2021
Notes to Financial Statements  
Inventory Disclosure [Text Block]

Note 5.  Inventories

 

Inventory components at December 31 —

 

   

2021

   

2020

 

Raw materials

  $ 651     $ 473  

Work in process and finished goods

    1,000       758  

Inventory reserves

    (87 )     (82 )

Total

  $ 1,564     $ 1,149