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Inventories
 9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
 
The components of inventories are as follows:
 At September 30,At December 31,
(in thousands)
202220212021
Raw materials
$189,715 $149,488 $191,174 
In-process products
48,627 28,399 30,309 
Finished products
301,678 207,625 222,273 
 $540,020 $385,512 $443,756