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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Schedule of Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques

The fair value of share-based awards was estimated using the Black-Scholes model with the following weighted-average assumptions for the three months ended March 31, 2018 and 2017:

		2018				2017
Dividend yield			0.00				0.00
Risk-free interest rate			2.86-2.94	%			.79-2.32	%
Expected volatility			137.2-137.3	%			67.3-139.5	%
Expected life (in years)			10				10

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- References

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- Definition

Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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