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Inventories - Inventories (Detail) - USD ($)
$ in Thousands
Jul. 02, 2016
Jan. 02, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 24,655 $ 18,609
Work in progress 1,419 1,246
Finished goods 4,323 3,198
Total inventory $ 30,397 $ 23,053