Annual report pursuant to Section 13 and 15(d)

Inventories, Net - Summary of Inventories, Net of Allowance for Obsolescence (Detail)

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Inventories, Net - Summary of Inventories, Net of Allowance for Obsolescence (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Sep. 24, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 116,591 $ 120,786
Work in progress 16,394 17,378
Finished goods 241,420 217,788
Supplies 7,696 6,052
Total inventories, net $ 382,101 $ 362,004