Selected Quarterly Data - Schedule of Selected Quarterly Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Quarterly Financial Information Disclosure [Abstract]
Sales	$ 135,522	$ 103,700	$ 121,125	$ 107,629	$ 122,646	$ 101,871	$ 117,875	$ 107,891	$ 467,976	$ 450,283	$ 442,221
Gross profit	61,039	44,813	55,817	48,688	55,034	45,238	54,843	49,766	210,357	204,881	203,839
Operating income (loss)	(5,100)	(4,835)	(2,872)	(5,234)	2,544	(3,639)	1,017	1,055	(18,041)	977	(5,090)
Income (loss) before taxes	(5,960)	(5,706)	(3,696)	(6,036)	1,823	(4,418)	234	271	(21,398)	(2,090)	(8,148)
Provision (benefit) for income taxes	(2,636)		35	29	40	34	35	57	(2,572)	166	260
Net loss	$ (3,324)	$ (5,706)	$ (3,731)	$ (6,065)	$ 1,783	$ (4,452)	$ 199	$ 214	$ (18,826)	$ (2,256)	$ (8,408)
Earnings (loss) per share – basic and diluted	$ (0.07)	$ (0.12)	$ (0.08)	$ (0.12)	$ 0.04	$ (0.09)	$ 0.00	$ 0.00	$ (0.39)	$ (0.05)	$ (0.17)