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

4. Inventories

 

Inventories consisted of the following (in thousands):

 

   

December 31,

 
   

2022

   

2021

 

Raw materials

  $ 3,374     $ 2,503  

Work-in-process

    17       1  

Finished products

    1,574       2,097  

Total inventories

  $ 4,965     $ 4,601