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Inventories - Inventories by Major Classification (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Jan. 02, 2016
Inventories by major classification    
Finished goods $ 115,312 $ 136,762
Raw materials 53,364 48,894
Work in process 2,810 2,330
Reserves for excess and obsolete inventory (5,860) (4,450)
Inventories $ 165,626 $ 183,536