Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012 Segment	Jul. 30, 2011
Significant Accounting Policies [Line Items]
Number of operating segments			1
Net impairment loss recognized in earnings	$ 0	$ 0	$ 0	$ 0
Asset impairment charges			514,000
Finite-lived impairment charges			0	0
Revenue related to gift card breakage	900,000	900,000	2,800,000	2,000,000
Discontinued Operations | 77kids store
Significant Accounting Policies [Line Items]
Asset impairment charges			16,600,000
Number of stores impaired	22		22
Discontinued Operations | Aerie store
Significant Accounting Policies [Line Items]
Asset impairment charges			$ 500,000
Number of stores impaired	1		1
Minimum
Significant Accounting Policies [Line Items]
Finite intangibles, useful life (in years)			15 years
Maximum
Significant Accounting Policies [Line Items]
Finite intangibles, useful life (in years)			25 years