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Inventories - Components of Inventories (Detail) - USD ($)
$ in Thousands
Jul. 28, 2018
Jan. 31, 2018
Inventory Disclosure [Abstract]    
Materials and Supplies $ 15,466 $ 13,715
Work-in-Progress 1,425 1,404
Finished Goods 15,982 17,210
Inventory, Gross 32,873 32,329
Inventory Reserve (4,477) (4,720)
Inventories $ 28,396 $ 27,609