UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 206,933	$ 199,261	$ 489,026	$ 469,085
Cost of goods sold, including wholesale, logistics and store occupancy costs	138,676	134,082	315,767	304,192
Gross profit	68,257	65,179	173,259	164,893
Store operating, selling and administrative expenses	53,501	50,181	109,562	101,951
Depreciation and amortization	4,638	4,276	9,238	8,418
Operating income	10,118	10,722	54,459	54,524
Interest expense, net	62	65	127	134
Income before provision for income taxes	10,056	10,657	54,332	54,390
Provision for income taxes	3,546	3,626	19,916	19,950
Net income	$ 6,510	$ 7,031	$ 34,416	$ 34,440
Earnings per share:
Basic (in dollars per share)	$ 0.29	$ 0.29	$ 1.53	$ 1.39
Diluted (in dollars per share)	$ 0.29	$ 0.28	$ 1.52	$ 1.38
Weighted average shares outstanding:
Basic (in dollars per share)	22,281	24,533	22,531	24,697
Diluted (in dollars per share)	22,442	24,710	22,695	24,889