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Inventories
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
The components of inventories were as follows: 
June 30,December 31,
(in thousands)20202019
Raw materials and supplies$77,509  $87,675  
Work-in-process19,080  22,024  
Finished goods267,196  288,669  
Inventories$363,785  $398,368