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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Finite-Lived Intangible Assets [Line Items]      
Amortization expense related to intangible assets $ 2.4 $ 2.8 $ 3.4