Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Unaudited Condensed Consolidated Statements of Operations [Abstract]
Net sales	$ 275,475	$ 216,888	$ 871,210	$ 702,718
Cost of goods sold	185,307	146,376	586,502	469,082
Gross margin	90,168	70,512	284,708	233,636
Store operating, selling and administrative expenses	80,147	62,342	234,085	186,211
Depreciation and amortization	7,397	6,328	22,299	18,847
Operating income	2,624	1,842	28,324	28,578
Interest income, net	(151)	(277)	(179)	(387)
Income before provision for income taxes	2,775	2,119	28,503	28,965
Provision for income taxes	510	620	7,159	7,179
Net income	$ 2,265	$ 1,499	$ 21,344	$ 21,786
Basic earnings per share (in dollars per share)	$ 0.13	$ 0.08	$ 1.19	$ 1.16
Diluted earnings per share (in dollars per share)	$ 0.13	$ 0.08	$ 1.18	$ 1.15
Weighted average shares outstanding:
Basic (in shares)	17,568	18,495	17,927	18,763
Diluted (in shares)	17,815	18,675	18,085	18,944