Nature of Business and Summary of Significant Accounting Policies - Principles of Consolidation and Financial Reporting Period (Detail)	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
2013 [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Year-End Date	Jan. 31, 2015
Number of Weeks	52
2012 [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Year-End Date		Feb. 01, 2014
Number of Weeks		52
2011 [Member]
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Year-End Date			Feb. 02, 2013
Number of Weeks			53