Net Income Per Share - Reconciliations of Basic and Diluted Share Calculations (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 Disclosure
Net income	$ 41,189	$ 40,748	$ 97,750	$ 100,215
Weighted Average Number of Shares Outstanding, Diluted
Weighted average shares outstanding	44,967	47,422	45,581	47,638
Effect of dilutive securities (shares)	476	551	455	618
Weighted average shares outstanding assuming dilution	45,443	47,973	46,036	48,256
Basic Earnings per Share
Basic earnings per share (dollars per share)	$ 0.90	$ 0.85	$ 2.10	$ 2.07
Diluted Earnings per Share
Diluted earnings per share (dollars per share)	$ 0.89	$ 0.84	$ 2.08	$ 2.05
Earnings Per Share, Basic. [Member]
Earnings Per Share Disclosure
Net income	41,189	40,748	97,750	100,215
Undistributed Earnings Allocated to Participating Securities	824	562	1,892	1,454
Net Income Available to Common Stockholders, Basic	40,365	40,186	95,858	98,761
Earnings Per Share, Diluted
Earnings Per Share Disclosure
Net income	41,189	40,748	97,750	100,215
Undistributed Earnings Allocated to Participating Securities	816	555	1,874	1,436
Net Income Available to Common Stockholders, Diluted	$ 40,373	$ 40,193	$ 95,876	$ 98,779