Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenue	$ 1,946
Cost of revenue	1,334
Gross profit	612
Operating Expenses
Research and development	6,855	$ 8,385
Sales and marketing	3,723	1,683
General and administrative	3,049	2,239
Amortization of intangible assets	1,636	1,817
Change in fair value of contingent consideration	1,227	856
Total Operating Expenses	16,490	14,980
Operating Loss	(15,878)	(14,980)
Other Expense
Interest expense, net	(334)	(578)
Other income	(60)
Total Other Expense, net	(394)	(578)
Loss before income taxes	(16,272)	(15,558)
Income tax benefit	858	2,645
Net loss	(15,414)	(12,913)
Other comprehensive gain
Foreign currency translation loss	1,133	3,796
Comprehensive loss	$ (14,281)	$ (9,117)
Net loss per share - basic and diluted	$ (0.13)	$ (0.12)
Weighted average common shares outstanding - basic and diluted	121,660	104,260