Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 29, 2016	May. 01, 2015
Income Statement [Abstract]
Net revenue	$ 99,793	$ 77,399
Cost of revenue	49,849	43,996
Gross margin	49,944	33,403
Research and development	13,596	11,830
Sales and marketing	27,496	22,119
General and administrative	27,852	25,784
Total operating expenses	68,944	59,733
Operating loss	(19,000)	(26,330)
Interest and other, net	365	(818)
Loss before income taxes	(18,635)	(27,148)
Income tax benefit	(7,008)	(9,318)
Net loss	$ (11,627)	$ (17,830)
Net loss per common share, basic and diluted (usd per share)	$ (0.17)	$ (0.25)
Weighted average number of shares outstanding, basic and diluted	70,330	70,000