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Inventories - Components of Inventories (Detail) - USD ($) $ in Thousands	Oct. 31, 2015	Jan. 31, 2015
Inventory Disclosure [Abstract]
Materials and Supplies	$ 9,945	$ 10,600
Work-In-Process	627	765
Finished Goods	8,404	7,372
Inventory, Gross	18,976	18,737
Inventory Reserve	(3,852)	(3,155)
Total Inventory	$ 15,124	$ 15,582

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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