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Inventories (Tables)
9 Months Ended
Sep. 25, 2021
Inventory Disclosure [Abstract]  
Inventories
(In thousands)September 25,
2021
December 26,
2020
Raw materials and supplies$133,109 $85,927 
Work-in-process66,574 49,361 
Finished goods215,007 186,785 
Valuation reserves(9,100)(7,071)
Inventories$405,590 $315,002