Balance Sheet - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Oct. 31, 2017	Jan. 31, 2017
Inventories:
Raw materials	$ 5,157	$ 5,781
Finished goods	5,642	5,985
Work in progress	2,003	1,146
Cost of inventories	12,802	12,912
Less allowance for obsolescence	(862)	(952)
Total inventories, net	$ 11,940	$ 11,960

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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