Nature of Business and Summary of Significant Accounting Policies - Principles of Consolidation and Financial Reporting Period (Detail)	12 Months Ended
	Feb. 02, 2013 2012 [Member]	Jan. 28, 2012 2011 [Member]	Jan. 29, 2011 2010 [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Year-End Date	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Number of Weeks	53	52	52