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Discontinued Operations - Summary of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Net Sales	$ 8,401	$ 19,195
Cost of Sales	7,353	9,072
Gross Profit	1,048	10,123
Operating Expenses	96	6,205
Income from Discontinued Operations	952	3,918
Gain on Sale of Assets of Discontinued Operations	1,800	10,162
Income Tax Expense	777	5,351
Income from Discontinued Operations, net of taxes	$ 1,975	$ 8,729

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Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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