Balance Sheet (Details 1) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Jan. 31, 2013
Inventories:
Raw materials	$ 3,074	$ 3,103
Finished goods	3,676	3,531
Work in progress	904	627
Total inventories, gross	7,654	7,261
Less allowance for obsolescence	(1,118)	(1,073)
Total inventories, net	$ 6,536	$ 6,188

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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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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