Stock-based Compensation Expense Classified in Consolidated Statements of Operations (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011	Jul. 31, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 2,255	$ 3,603	$ 5,149	$ 7,755
Cost of sales, buying and occupancy
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	293	245	566	384
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,962	2,148	3,698	5,283
Merger-related costs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation		$ 1,210	$ 885	$ 2,088