Quarterly Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May 02, 2015	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 190,518	$ 151,636	$ 157,139	$ 166,920	$ 211,542	$ 162,258	$ 161,061	$ 158,451	$ 666,213	$ 693,312	$ 674,618
Gross profit	$ 64,820	$ 55,431	$ 59,828	$ 61,448	$ 66,409	$ 55,910	$ 58,856	$ 57,305	$ 241,527	$ 238,480	245,048
Gross profit margin	34.00%	36.60%	38.10%	36.80%	31.40%	34.50%	36.50%	36.20%	36.30%	34.40%
Operating expenses	$ 61,051	$ 57,510	$ 60,002	$ 64,982	$ 64,762	$ 60,192	$ 61,032	$ 61,232	$ 243,545	$ 247,218	244,045
Operating income (loss)	3,769	(2,079)	(174)	(3,534)	1,647	(4,282)	(2,176)	(3,927)	(2,018)	(8,738)	1,003
Other expense, net	(1,536)	(1,583)	(1,604)	(1,203)	(761)	(688)	(667)	(596)	(5,926)	(2,712)	(1,562)
Income tax provision	(186)	(205)	(205)	(205)	(219)	(205)	(205)	(205)	(801)	(834)	(819)
Net income (loss)	$ 2,047	$ (3,867)	$ (1,983)	$ (4,942)	$ 667	$ (5,175)	$ (3,048)	$ (4,728)	$ (8,745)	$ (12,284)	$ (1,378)
Net income (loss) per share	$ 0.03	$ (0.06)	$ (0.03)	$ (0.09)	$ 0.01	$ (0.09)	$ (0.05)	$ (0.08)	$ (0.15)	$ (0.22)	$ (0.03)
Net income (loss) per common share — assuming dilution	$ 0.03	$ (0.06)	$ (0.03)	$ (0.09)	$ 0.01	$ (0.09)	$ (0.05)	$ (0.08)	$ (0.15)	$ (0.22)	$ (0.03)
Weighted average shares outstanding:
Basic	64,185,000	60,513,000	57,259,000	57,181,000	57,158,000	57,125,000	57,093,000	56,641,000	59,784,594	57,004,321	53,458,662
Diluted	64,492,000	60,513,000	57,259,000	57,181,000	57,158,000	57,125,000	57,093,000	56,641,000	59,784,594	57,004,321	53,458,662
Selected Quarterly Financial Information Footnotes [Abstract]
Distribution facility consolidation and technology upgrade costs	$ 147	$ 150	$ 300	$ 80	$ 81	$ 294	$ 972		$ 677	$ 1,347	$ 0
Executive and management transition costs		$ 568	$ 242	$ 3,601		$ 754	$ 205	$ 2,590	$ 4,411	$ 3,549	$ 5,520