CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (4,025)	$ (2,774)	$ (3,811)	$ (3,916)
Foreign currency translation adjustments	(2)		(2)	2
Comprehensive loss	$ (4,027)	$ (2,774)	$ (3,813)	$ (3,914)