CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Revenue	$ 0	$ 0
Operating expenses
Research and development	1,026	1,020
General and administrative	970	849
Total operating expenses	1,996	1,869
Net operating loss	(1,996)	(1,869)
Other income
Change in fair value of warrant liability	1,596	0
Interest income	3	2
Total other income	1,599	2
Net loss	$ (397)	$ (1,867)
Loss per share
Net loss per share, basic and diluted	$ (0.01)	$ (0.02)
Basic and diluted weighted average number of common shares outstanding	95,645	89,763

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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