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. 01, 2014
Nov. 02, 2013
Nov. 01, 2014
Nov. 02, 2013
Earnings Per Share [Abstract]        
Net income $ 59,124 $ 45,430 $ 169,871 $ 132,167
Denominator for basic net income per share - weighted-average common shares 64,419 64,061 64,347 63,912
Dilutive effect of stock options and non-vested stock 319 477 308 512
Denominator for diluted net income per share 64,738 64,538 64,655 64,424
Net income per common share:        
Basic $ 0.92 $ 0.71 $ 2.64 $ 2.07
Diluted $ 0.91 $ 0.70 $ 2.63 $ 2.05