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Inventories
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Inventories

4.Inventories

 

Inventories consist of the following at:

 

(Dollars in thousands)  September 30,
2021
   December 31,
2020
 
Finished goods  $272   $371 
Work in process   297    139 
Raw materials   589    318 
Total  $1,158   $828