CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue	$ 7,632	$ 7,692
Cost of revenue	4,263	4,714
Gross profit	3,369	2,978
Operating expenses:
Research and development	6,917	5,581
Selling, general and administrative	11,747	11,718
Amortization of intangible assets	50	50
Total operating expenses	18,714	17,349
Loss from operations	(15,345)	(14,371)
Non-operating (expense) income, net:
Gain from revaluation of warrant liability		6,296
Foreign exchange loss	(117)	(1,113)
Interest expense	(655)	(255)
Other income, net	66	2
Total non-operating (expense) income, net	(706)	4,930
Loss before income taxes	(16,051)	(9,441)
Provision for income taxes	812	19
Net loss	$ (16,863)	$ (9,460)
Net loss per share:
Basic	$ (0.17)	$ (0.10)
Diluted	$ (0.17)	$ (0.17)
Weighted average shares outstanding used for calculating net loss per share:
Basic	99,471	93,411
Diluted	99,471	94,662