Quarterly Financial Information (Unaudited) (Details) - 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 results
Net sales	$ 105,147	$ 96,354	$ 98,280	$ 106,426	$ 100,158	$ 102,582	$ 106,529	$ 124,430	$ 406,207	$ 433,699	$ 498,753
Gross profit	52,959	50,901	52,053	57,939	51,038	54,288	54,830	67,272	213,852	227,428	246,040
Net income (loss)	$ (10,158)	$ (7,523)	$ (2,774)	$ (1,142)	$ (32,786)	$ (1,506)	$ (2,509)	$ 4,041	$ (21,597)	$ (32,760)	$ (4,483)
Net income (loss) per share—Basic	$ (0.73)	$ (0.55)	$ (0.20)	$ (0.08)	$ (2.39)	$ (0.11)	$ (0.18)	$ 0.30	$ (1.57)	$ (2.39)	$ (0.33)
Net income (loss) per share—Diluted	$ (0.73)	$ (0.55)	$ (0.20)	$ (0.08)	$ (2.39)	$ (0.11)	$ (0.18)	$ 0.30	$ (1.57)	$ (2.39)	$ (0.33)