CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Net sales	$ 215,472	$ 204,443	$ 580,594	$ 559,294
Cost of sales (including buying, distribution and occupancy costs)	150,317	142,933	407,306	391,765
Gross profit	65,155	61,510	173,288	167,529
Selling, general and administrative expenses	48,276	47,096	136,160	132,135
Operating income	16,879	14,414	37,128	35,394
Interest income	(17)	(28)	(66)	(79)
Interest expense	68	64	200	196
Income before income taxes	16,828	14,378	36,994	35,277
Income tax expense	6,355	5,282	13,887	12,816
Net income	$ 10,473	$ 9,096	$ 23,107	$ 22,461
Net income per share:
Basic (in dollars per share)	$ 0.79	$ 0.71	$ 1.74	$ 1.77
Diluted (in dollars per share)	$ 0.78	$ 0.70	$ 1.72	$ 1.73