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
May 03, 2014
May 04, 2013
Earnings Per Share [Abstract]    
Net income $ 49,953 $ 41,826
Denominator for basic net income per share - weighted-average common shares 64,273 63,842
Dilutive effect of stock options and non-vested stock 334 653
Denominator for diluted net income per share 64,607 64,495
Net income per common share:    
Basic $ 0.78 $ 0.66
Diluted $ 0.77 $ 0.65