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Inventories (Tables)
6 Months Ended
Jul. 02, 2021
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories consisted of the following:

(in thousands)July 2, 2021December 31, 2020
Finished products
$147,184 $140,080 
Manufacturing materials
49,087 47,081 
Plastic shells, plastic pallets and other inventories
41,552 38,596 
Total inventories
$237,823 $225,757