UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 211,123	$ 187,958	$ 485,830	$ 463,646
Cost of goods sold	144,772	133,550	322,706	311,020
Gross margin	66,351	54,408	163,124	152,626
Store operating, selling and administrative expenses	61,965	53,556	123,869	111,893
Depreciation and amortization	6,271	6,014	12,519	11,726
Operating (loss) income	(1,885)	(5,162)	26,736	29,007
Interest (income) expense, net	(167)	56	(111)	124
(Loss) income before provision for income taxes	(1,718)	(5,218)	26,847	28,883
(Benefit)/Provision for income taxes	(496)	(2,042)	6,560	11,150
Net (loss) income	$ (1,222)	$ (3,176)	$ 20,287	$ 17,733
Basic (loss) earnings per share	$ (0.06)	$ (0.15)	$ 1.07	$ 0.84
Diluted (loss) earnings per share	$ (0.06)	$ (0.15)	$ 1.06	$ 0.84
Weighted average shares outstanding:
Basic (in dollars per share)	18,823	20,781	18,896	21,049
Diluted (in dollars per share)	18,823	20,781	19,079	21,124