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Inventories
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
 
The composition of inventories is as follows (dollar amounts in thousands):
 
September 30,
2019
December 31,
2018
Raw materials$12,139  $10,410  
Work in progress1,797  1,524  
Finished goods31,346  30,114  
Total inventories$45,282  $42,048