CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011
CONDENSED CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Net sales	$ 244,434	$ 215,472	$ 649,254	$ 580,594
Cost of sales (including buying, distribution and occupancy costs)	167,999	150,317	451,951	407,306
Gross profit	76,435	65,155	197,303	173,288
Selling, general and administrative expenses	55,875	48,276	154,074	136,160
Operating income	20,560	16,879	43,229	37,128
Interest income	(4)	(17)	(29)	(66)
Interest expense	69	68	203	200
Income before income taxes	20,495	16,828	43,055	36,994
Income tax expense	8,247	6,355	16,928	13,887
Net income	$ 12,248	$ 10,473	$ 26,127	$ 23,107
Net income per share:
Basic	$ 0.6	$ 0.52	$ 1.29	$ 1.16
Diluted	$ 0.6	$ 0.52	$ 1.28	$ 1.15
Weighted average shares:
Basic	19,951	19,597	19,922	19,471
Diluted	20,003	19,748	19,996	19,656
Cash dividends declared per share	$ 0.05	$ 0.0	$ 0.1	$ 0.0