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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Aug. 13, 2012	Jan. 30, 2012
Income Tax Disclosure [Abstract]
Release of valuation allowance for deferred tax assets	$ 6,370
Valuation allowance	2,935
Unrecognized tax benefits		2,977
Reasonably possible decrease in unrecognized tax benefits	$ 1,642

The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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