Summary of Results from Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jul. 28, 2012	Jul. 28, 2012
Discontinued Operations [Line Items]
Sales	$ 439	$ 813
Gross margin	(218)	(84)
Selling, general and administrative expenses	(1,534)	(1,845)
Depreciation and amortization	(4)	(8)
Benefit from income taxes
Loss from discontinued operations, net of taxes	$ (1,756)	$ (1,937)

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Disposal Group Including Discontinued Operation Selling General And Administrative Expenses

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Amount of expense from discontinued operations, that reflects the allocation of the cost of tangible and intangible assets over the assets' useful lives.

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No definition available.

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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 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 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 before extraordinary items 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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