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Inventories - Components of Inventory (Detail) - USD ($)
$ in Thousands
Mar. 30, 2019
Dec. 29, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 41,520 $ 38,955
Work-in-process 10,677 9,036
Finished goods 41,062 46,741
Total inventories $ 93,259 $ 94,732