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Inventories
9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
 September 30,December 31,
(in thousands)
20222021
Finished goods and work-in-process$464,463 $393,778 
Raw materials108,277 86,856 
Stores, supplies, and other19,482 17,905 
$592,222 $498,539