CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 28, 2012	Apr. 30, 2011
Consolidated Statements of Income [Abstract]
Net sales	$ 222,613	$ 198,450
Cost of sales (including buying, distribution and occupancy costs)	154,074	136,690
Gross profit	68,539	61,760
Selling, general and administrative expenses	50,562	45,625
Operating income	17,977	16,135
Interest income	(16)	(28)
Interest expense	68	61
Income before income taxes	17,925	16,102
Income tax expense	6,905	6,183
Net income	$ 11,020	$ 9,919
Net income per share:
Basic (in dollars per share)	$ 0.54	$ 0.51
Diluted (in dollars per share)	$ 0.54	$ 0.50