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Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consist of the following (in thousands):

 

   September 30, 2023   December 31, 2022 
Raw materials  $6,490   $6,556 
Work in process   542    530 
Finished goods   1,633    2,697 
Reserve for excess and obsolescence   (1,877)   (1,907)
Total inventory  $6,788   $7,876