Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011
Income Statement [Abstract]
Net sales	$ 612,548	$ 564,003	$ 1,767,831	$ 1,645,832
Cost of sales	258,149	239,763	763,660	714,839
Gross margin	354,399	324,240	1,004,171	930,993
Selling, general and administrative expenses	287,480	269,498	838,954	788,656
Operating income	66,919	54,742	165,217	142,337
Interest income	398	97	1,054	430
Interest expense	389	541	1,209	1,352
Other Nonoperating Income (Expense)	(24)	0	(24)	0
Income before income taxes	66,904	54,298	165,038	141,415
Income tax provision	26,156	22,018	64,823	57,029
Net income	$ 40,748	$ 32,280	$ 100,215	$ 84,386
Earnings per share:
Basic earnings per share (dollars per share)	$ 0.85	$ 0.62	$ 2.07	$ 1.61
Weighted average shares outstanding	47,422	51,389	47,638	51,583
Diluted earnings per share (dollars per share)	$ 0.84	$ 0.61	$ 2.05	$ 1.58
Weighted average shares outstanding, assuming dilution	47,973	52,072	48,256	52,441