Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	May 05, 2018	Apr. 29, 2017
Consolidated Statements of Income (Unaudited) [Abstract]
Net sales	$ 275,739	$ 227,602
Cost of sales	162,863	134,667
Gross profit	112,876	92,935
Selling, general and administrative expenses	72,364	61,731
Depreciation and amortization expenses	2,763	2,272
Pre-opening expenses	1,764	1,598
Operating income	35,985	27,334
Interest expense, net	538	1,334
Loss on extinguishment of debt	100	397
Income before income taxes	35,347	25,603
Income tax expense	4,893	6,637
Net income	$ 30,454	$ 18,966
Earnings per common share:
Basic (in dollars per share)	$ 0.49	$ 0.31
Diluted (in dollars per share)	$ 0.46	$ 0.29
Weighted average common shares outstanding:
Basic (in shares)	62,169	60,880
Diluted (in shares)	65,624	64,389