CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
Revenue	$ 5,594	$ 3,224	$ 15,046	$ 7,171
Operating expenses:
Cost of revenue	3,132	1,984	9,136	4,984
Research and development	2,028	1,729	5,940	4,887
Selling and marketing	3,291	2,347	8,609	5,392
General and administrative	3,244	2,103	8,772	5,721
Total operating expenses	11,695	8,163	32,457	20,984
Loss from operations	(6,101)	(4,939)	(17,411)	(13,813)
Interest expense	(126)		(131)
Other income (expense), net	(76)	1	(2,146)	1
Net loss and comprehensive loss	$ (6,303)	$ (4,938)	$ (19,688)	$ (13,812)
Net loss per common share, basic and diluted (in dollars per share)	$ (6.59)	$ (7.49)	$ (22.87)	$ (21.40)
Shares used to compute net loss per common share, basic and diluted (in shares)	955,890	659,129	860,957	645,306

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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