Quarterly report pursuant to Section 13 or 15(d)

Net income per common share - Net Income Per Basic and Diluted Share (Detail)

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Net income per common share - Net Income Per Basic and Diluted Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 02, 2013
Oct. 27, 2012
Nov. 02, 2013
Oct. 27, 2012
Earnings Per Share [Abstract]        
Net income $ 45,430 $ 38,151 $ 132,167 $ 108,017
Denominator for basic net income per share - weighted-average common shares 64,061 63,484 63,912 63,016
Dilutive effect of stock options and non-vested stock 477 999 512 1,269
Denominator for diluted net income per share 64,538 64,483 64,424 64,285
Net income per common share:        
Basic $ 0.71 $ 0.60 $ 2.07 $ 1.71
Diluted $ 0.70 $ 0.59 $ 2.05 $ 1.68