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Inventories (Tables)
3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consisted of the following:

  

(Dollars in thousands)  March 31,
2023
   December 31,
2022
 
Raw materials  $2,691   $3,127 
Finished goods   1,298    1,315 
Total inventories  $3,989   $4,442