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Inventories (Tables)
3 Months Ended
Mar. 27, 2021
Inventory Disclosure [Abstract]  
Inventories
(In thousands)March 27,
2021
December 26,
2020
Raw materials and supplies$119,196 $85,927 
Work-in-process52,803 49,361 
Finished goods201,748 186,785 
Valuation reserves(8,290)(7,071)
Inventories$365,457 $315,002