Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2016	Jul. 31, 2015	Jul. 29, 2016	Jul. 31, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (12,051)	$ (21,124)	$ (23,678)	$ (38,954)
Foreign currency translation adjustments, net of zero tax	(1,753)	140	(1,259)	267
Comprehensive loss	$ (13,804)	$ (20,984)	$ (24,937)	$ (38,687)