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Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue	$ 511	$ 466	$ 880	$ 910
Cost of goods sold	150	137	261	270
Gross profit	361	329	619	640
Operating expenses:
Selling, general and administrative	2,287	2,502	4,663	5,542
Research and development	1,945	1,450	3,289	2,430
Total operating expenses	4,232	3,952	7,952	7,972
Operating loss	(3,871)	(3,623)	(7,333)	(7,332)
Change in fair value of the warrant liability, net	(1,181)	(48)	491	161
Other income (expense)	(1,615)	(28)	(1,638)	(18)
Net loss	(6,667)	(3,699)	(8,480)	(7,189)
Other comprehensive income (loss):
Foreign currency translation adjustments	(1)	7	(10)	(7)
Comprehensive loss	$ (6,668)	$ (3,692)	$ (8,490)	$ (7,196)
Common share data:
Basic and diluted loss per common share	$ (4.41)	$ (4.84)	$ (5.72)	$ (9.96)
Weighted average number of basic and diluted common shares outstanding	1,510,752	765,072	1,483,148	722,036

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