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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventory
Inventories consist of the following:
  December 31, 2021December 31, 2020
(dollars in thousands)
Raw materials$9,242 $7,366 
Work in progress990 1,225 
Finished goods3,538 3,360 
Total inventory$13,770 $11,951