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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Significant Accounting Policies [Abstract]

Computations of Basic and Diluted Net Loss Per Share

The computations of basic and diluted net loss per common share for the years ended December 31, 2017, 2016 and 2015 are as follows (in thousands, except per share amounts):

		Year Ended December 31,
		2017				2016				2015
Net loss		$	(19,375	)		$	(11,168	)		$	(8,735	)
Weighted average common shares outstanding – basic and diluted			30,195				26,529				21,009
Net loss per common share – basic and diluted		$	(0.64	)		$	(0.42	)		$	(0.42	)

Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share of Common Stock

The following common stock equivalents were excluded from the computation of diluted net loss per common share of common stock for the years ended December 31, 2017, 2016 and 2015 because including them would have been antidilutive (in thousands):

		Year Ended December 31,
		2017				2016				2015
Stock options			3,390				3,017				2,240
Warrants			2,779				3,246				-

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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