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Inventories
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following components (dollars in thousands):
 March 31,
2021
December 31,
2020
Finished goods$78,390 $78,010 
Work in process31,500 29,680 
Raw materials41,930 41,690 
Total inventories$151,820 $149,380