Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended			9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011	Jan. 28, 2012 Reversal of deferred tax valuation allowance	Oct. 27, 2012 Federal	Oct. 27, 2012 State and Local Jurisdiction	Oct. 27, 2012 Federal And State Jurisdiction
Income Taxes [Line Items]
Deferred tax assets, total	$ 51,700,000		$ 51,700,000
Deferred tax assets, valuation allowance	3,600,000		3,600,000
Deferred tax assets, net operating loss carryforwards	21,700,000		21,700,000
Deferred tax assets, deferred gain on sale-leaseback	7,700,000		7,700,000
Net operating loss carryforwards						61,100,000	38,500,000
Net operating loss carryforwards, expiration year								2031
Net operating loss carryforwards, stock compensation deductions								11,500,000
Recognized income tax expense(benefit) related to reversal of deferred tax valuation allowance	$ (1,073,000)	$ (175,000)	$ 2,617,000	$ 1,034,000	$ (47,800,000)
Effective income tax rate on income from continuing operations			40.50%	8.80%