UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 237,006	$ 228,301	$ 726,031	$ 697,385
Cost of goods sold, including wholesale, logistics and store occupancy costs	153,181	145,949	468,947	450,140
Gross profit	83,825	82,352	257,084	247,245
Store operating, selling and administrative expenses	55,853	48,255	165,415	150,206
Depreciation and amortization	4,799	4,238	14,036	12,656
Operating income	23,173	29,859	77,633	84,383
Interest expense, net	60	67	187	201
Income before provision for income taxes	23,113	29,792	77,446	84,182
Provision for income taxes	8,509	11,115	28,426	31,065
Net income	$ 14,604	$ 18,677	$ 49,020	$ 53,117
Earnings per share:
Basic (in dollars per share)	$ 0.66	$ 0.79	$ 2.19	$ 2.18
Diluted (in dollars per share)	$ 0.66	$ 0.79	$ 2.18	$ 2.17
Weighted average shares outstanding:
Basic (in dollars per share)	21,989	23,607	22,350	24,333
Diluted (in dollars per share)	22,186	23,777	22,525	24,519