Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			1 Months Ended
	Feb. 03, 2013	Jan. 29, 2012	Jan. 30, 2011	Feb. 03, 2013 Federal	Feb. 03, 2013 State and Local Jurisdiction [Member]
Income Tax [Line Items]
Valuation allowance against deferred tax assets	$ 1,158
Change in valuation allowance				(6,661)	(3,429)
Federal tax credit carryforwards	3,177
General business credit carryforwards	2,507
AMT credit carryovers	670
Expiration period for general business credits	20 years
Carryforward period, AMT credits	Indefinite
Enacted legislation which established tax based on taxable margin	269	228	222
Unrecognized tax benefits will be settled through federal and state audits or will be recognized as a result of the expiration of statute of limitations	139
Unrecognized tax benefits, if recognized, would affect the effective tax rate	412
Accrued interest on unrecognized tax benefits	290	1,109
Accrued penalties on unrecognized tax benefits	$ 290	$ 1,109