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Inventories (Tables)
9 Months Ended
Sep. 26, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory
(amounts in thousands)September 26, 2020December 31, 2019
Raw materials
$372,456 $372,289 
Work in process
36,359 38,432 
Finished goods
101,134 94,357 
Total inventories$509,949 $505,078