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Inventories - Components of Inventories (Detail) - USD ($) $ in Thousands | Oct. 28, 2017 | Jan. 31, 2017
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Inventory Disclosure [Abstract] |  |
Materials and Supplies | $ 13,264 | $ 11,865
Work-In-Process | 1,475 | 1,216
Finished Goods | 13,730 | 10,270
Inventory, Gross | 28,469 | 23,351
Inventory Reserve | (4,811) | (3,845)
Inventories | $ 23,658 | $ 19,506

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