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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2016
Schedule of Estimated Values of Warrants Valuation Assumptions | The weighted average estimated values of director and employee stock option grants, as well as the weighted average assumptions that were used in calculating such values during the twelve months ended December 31, 2016 and 2015, were based on estimates at the date of grant as follows:
|  | April 30, |  |  | January 1, |  |  | February 10, |  |  | December 6, |
|  | 2015 Grant |  |  | 2016 Grant |  |  | 2016 Grant |  |  | 2016 Grant |
Risk-free interest rate |  |  | 1.43 | % |  |  | 1.76 | % |  |  | 1.15 | % |  |  | 1.84 | %
Weighted average expected term |  |  | 5 years |  |  |  | 5 years |  |  |  | 5 years |  |  |  | 5 years |
Expected volatility |  |  | 143.10 | % |  |  | 134.18 | % |  |  | 132.97 | % |  |  | 123.82 | %
Expected dividend yield |  |  | 0.00 | % |  |  | 0.00 | % |  |  | 0.00 | % |  |  | 0.00 | %
Warrant One [Member] |
Schedule of Estimated Values of Warrants Valuation Assumptions | The estimated values of warrants, as well as the assumptions that were used in calculating such values were based on estimates at the issuance date as follows:
|  | Noteholders |  |  | Placement Agent |
Risk-free interest rate |  |  | 1.76 | % |  |  | 1.54 | %
Weighted average expected term |  |  | 5 years |  |  |  | 5 years |
Expected volatility |  |  | 134.18 | % |  |  | 134.18 | %
Expected dividend yield |  |  | 0.00 | % |  |  | 0.00 | %
Warrant Two [Member] |
Schedule of Estimated Values of Warrants Valuation Assumptions | The estimated values of warrants, as well as the assumptions that were used in calculating such values were based on estimates at the issuance date as follows:
|  | Bridge Noteholders |  |  | Placement Agent |
Risk-free interest rate |  |  | 1.83 | % |  |  | 1.93 | %
Weighted average expected term |  |  | 5 years |  |  |  | 5 years |
Expected volatility |  |  | 123.94 | % |  |  | 123.07 | %
Expected dividend yield |  |  | 0.00 | % |  |  | 0.00 | %

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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