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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenues		$ 396
Operating expenses
Research and development	$ 1,672	3,430
General and administrative	1,640	2,409
Total operating expenses	3,312	5,839
Loss from operations	(3,312)	(5,443)
Interest expense	(187)	(223)
Other income (expense), net	16	(3)
Net loss	$ (3,483)	$ (5,669)
Net loss per share, basic and diluted	$ (0.21)	$ (0.38)
Weighted average shares used to compute basic and diluted net loss per share	16,791,362	14,754,484

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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