Unaudited Quarterly Results (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
Unaudited Quarterly Results
Net revenues	$ 14,975	$ 6,495	$ 8,473	$ 10,678	$ 7,844	$ 8,098	$ 8,482	$ 10,230	$ 34,022	$ 34,654	$ 34,968
Cost of goods sold	5,083	0	0	0					5,083
Income (loss) before income taxes	(9,830)	(1,362)	2,444	4,079	1,853	2,348	2,973	5,614	(4,669)	12,791	14,534
Net (loss) income	$ (11,153)	$ (873)	$ 1,518	$ 2,581	$ 1,384	$ 1,546	$ 1,928	$ 3,571	$ (7,927)	$ 8,433	$ 9,820
Net income (loss) per share - basic	$ (0.97)	$ (0.10)	$ 0.17	$ 0.30	$ 0.16	$ 0.18	$ 0.22	$ 0.42	$ (0.84)	$ 0.97	$ 1.17
Net income (loss) per share - diluted	$ (0.97)	$ (0.10)	$ 0.17	$ 0.29	$ 0.16	$ 0.17	$ 0.22	$ 0.41	$ (0.84)	$ 0.95	$ 1.15