Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net revenues	$ 45,577	$ 42,600
Cost of revenues	33,376	33,293
Gross profit	12,201	9,307
Operating expenses:
Research and development	9,026	7,842
Sales and marketing	6,850	5,049
General and administrative	6,036	5,696
Total operating expenses	21,912	18,587
Loss from operations	(9,711)	(9,280)
Other income (expense), net:
Interest expense	(464)	(1,479)
Other income (expense)	(49)	640
Total other expense, net	(513)	(839)
Loss before income taxes	(10,224)	(10,119)
Provision for income taxes	(182)	(65)
Net loss attributable to common stockholders	$ (10,406)	$ (10,184)
Net loss per share attributable to common stockholders, basic and diluted (usd per share)	$ (0.25)	$ (5.97)
Shares used in computing net loss per share attributable to common stockholders, basic and diluted	41,149	1,706