CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (1,506)	$ (1,274)	$ 26	$ (1,421)
Foreign currency translation adjustments		(1)	1	(5)
Comprehensive income (loss)	$ (1,506)	$ (1,275)	$ 27	$ (1,426)