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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories in the Consolidated Balance Sheets are summarized as follows:
 December 31,
(Thousands)20212020
Raw materials and supplies$93,518 $42,905 
Work in process221,638 156,093 
Finished goods45,959 51,780 
Inventories, net361,115 250,778