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Cash Proceeds, Tax Benefits and Intrinsic Values Related to Stock Options Exercised (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
May 04, 2013
Apr. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Proceeds from stock options exercised $ 3,648 $ 649
Tax benefit related to stock options exercised 907 216
Intrinsic value of stock options exercised $ 2,268 $ 540