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Discontinued Operations - Summary of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Net Sales	$ 8,401us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Cost of Sales	7,353us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold
Gross Profit	1,048us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss
Operating Expenses	96us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense
Income from Discontinued Operations	952us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax
Gain on Sale of Assets of Discontinued Operations	1,800us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
Income Tax Expense	777us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Income from Discontinued Operations	$ 1,975us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity

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- Definition

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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-Publisher FASB

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Pretax income (loss) from operations of a business component (exclusive of any gain (loss) on disposal, or provision therefore) during the reporting period, until its 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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Amount of costs of goods sold attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of gross profit attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of operating expenses attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of 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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