Restructuring - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011 Year Store Segment	Jul. 31, 2010	Mar. 31, 2011 Store	Jan. 29, 2011	Jan. 30, 2010
Restructuring Cost and Reserve [Line Items]
Number of stores identified for closure					110
Restructuring charges	$ 1,005,000	$ 112,000	$ 3,270,000	$ 5,071,000
Expected restructuring charges			14,000,000
Number of stores closed			17
Restructuring liabilities	5,572,000	5,357,000	5,572,000	5,357,000		3,996,000	3,873,000
Restructuring liabilities, current	3,700,000		3,700,000
Restructuring liabilities, noncurrent	$ 1,900,000		$ 1,900,000
Minimum
Restructuring Cost and Reserve [Line Items]
Number of stores identified as consolidation or downsizing opportunities					15
Maximum
Restructuring Cost and Reserve [Line Items]
Number of stores identified as consolidation or downsizing opportunities					20
Fiscal Year 2011
Restructuring Cost and Reserve [Line Items]
Number of stores expected to close					83
Fiscal Year 2012
Restructuring Cost and Reserve [Line Items]
Number of stores expected to close					25
Fiscal Year 2013
Restructuring Cost and Reserve [Line Items]
Number of stores expected to close					2
Full Stores
Restructuring Cost and Reserve [Line Items]
Number of stores closed			15