Balance Sheet - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jul. 31, 2015	Jan. 31, 2015
Inventories:
Raw materials	$ 6,348	$ 6,718
Finished goods	8,217	4,466
Work in progress	765	1,017
Cost of inventories	15,330	12,201
Less allowance for obsolescence	(853)	(750)
Total inventories, net	$ 14,477	$ 11,451

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

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Amount of valuation reserve for inventory.

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

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