Selected Quarterly Data - Schedule of Selected Quarterly Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Feb. 02, 2019	Oct. 03, 2018	Jul. 03, 2018	Apr. 03, 2018	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017	Jan. 28, 2017
Quarterly Financial Information Disclosure [Abstract]
Sales	$ 131,150	$ 107,069	$ 122,206	$ 113,331	$ 135,522	$ 103,700	$ 121,125	$ 107,629	$ 473,756	$ 467,976	$ 450,283	$ 450,283
Gross profit	57,016	47,060	56,525	50,688	61,039	44,813	55,817	48,688	211,289	210,357	204,881
Operating loss	(6,441)	(1,230)	(222)	(2,226)	(5,100)	(4,835)	(2,872)	(5,234)	(10,119)	(18,041)	977
Loss before taxes	(7,261)	(2,028)	(1,180)	(3,112)	(5,960)	(5,706)	(3,696)	(6,036)	(13,581)	(21,398)	(2,090)
Provision (benefit) for income taxes	(31)	(22)	5	(2)	(2,636)		35	29	(50)	(2,572)	166
Net loss	$ (7,230)	$ (2,006)	$ (1,185)	$ (3,110)	$ (3,324)	$ (5,706)	$ (3,731)	$ (6,065)	$ (13,531)	$ (18,826)	$ (2,256)
Loss per share – basic and diluted	$ (0.15)	$ (0.04)	$ (0.02)	$ (0.06)	$ (0.07)	$ (0.12)	$ (0.08)	$ (0.12)	$ (0.28)	$ (0.39)	$ (0.05)

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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