Stock-Based Compensation (Details 5) (Restricted Stock, USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 28, 2012		Jul. 30, 2011		Jul. 28, 2012		Jul. 30, 2011
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense before the recognized income tax benefit	$ 2,108		$ 522		$ 2,718		$ 1,655
Income tax benefit (1)	$ 813	[1]	$ 200	[1]	$ 1,043	[1]	$ 632	[1]

[1] Income tax benefit was calculated using an adjusted effective tax rate. The adjusted rate removes the tax effects from the favorable resolution of certain tax positions.