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Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jan. 31, 2016	Jan. 31, 2015
Inventory, Net [Abstract]
Raw materials	$ 7,314	$ 6,718
Finished goods	4,967	4,466
Work in progress	1,563	1,017
Cost of inventories	13,844	12,201
Less allowance for obsolescence	(900)	(750)
Net inventories	$ 12,944	$ 11,451

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.6(a)(1))
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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.

+ References

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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 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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