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Inventories
 12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
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 
The allowance for inventory valuation was $1.2 million and $0.4 million at December 31, 2021 and December 31, 2020, respectively.
Included in inventory are assets located in Mexico with a carrying amount of $4.0 million at December 31, 2021 and $3.1 million at December 31, 2020, and assets located in Canada with a carrying amount of $1.1 million at December 31, 2021 and $1.1 million at December 31, 2020.