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Note 4 - Inventories
12 Months Ended
Dec. 31, 2022
Notes to Financial Statements  
Inventory Disclosure [Text Block]

Note 4 - Inventories         

 

Inventories as of December 31 consist of (in thousands):

 

   

2022

   

2021

 
                 

Raw materials

  $ 2,165     $ 1,031  

Work-in-process

    373       194  

Total

  $ 2,538     $ 1,225