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Inventories - Components of Inventories (Detail) - USD ($)
$ in Thousands
Sep. 27, 2018
Jun. 28, 2018
Sep. 28, 2017
Inventory Disclosure [Abstract]      
Raw material and supplies $ 55,681 $ 73,209 $ 50,086
Work-in-process and finished goods 125,350 101,153 115,218
Total $ 181,031 $ 174,362 $ 165,304