Quarterly report pursuant to Section 13 or 15(d)

Inventories, net - Summary of Inventories, Net of Allowance for Obsolescence (Details)

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Inventories, net - Summary of Inventories, Net of Allowance for Obsolescence (Details) - USD ($)
$ in Thousands
Jun. 26, 2021
Sep. 26, 2020
Jun. 27, 2020
Inventory Disclosure [Abstract]      
Raw materials $ 199,701 $ 152,692 $ 151,412
Work in progress 74,039 49,312 42,185
Finished goods 338,709 218,847 218,542
Supplies 14,186 18,764 13,780
Total inventories, net $ 626,635 $ 439,615 $ 425,919