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Stockholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of fair value of derivative liabilities using Black-Scholes option-pricing model |
|  | 2018 |  | 2017
Expected volatility |  | 191% - 196% |  | 125% - 214%
Risk free interest rate |  | 2.44% - 2.58% |  | 1.31% - 2.57%
Expected dividend yield |  | - |  | -
Expected option term (in years) |  | 3-5 |  | 0.9 - 8.1
Weighted average grant date fair value |  | $0.21 – 0.22 |  | $0.12 - 0.45
Warrants [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of outstanding service-based options |
|  | Number of |  |  | Weighted Average Exercise |  |  | Year of
|  | Shares |  |  | Price |  |  | Expiration
Balance at December 31, 2016 |  |  | 1,954,981 |  |  | $ | 0.19 |  |  | 2017 - 2019
Issued |  |  | 2,634,228 |  |  |  | 0.40 |  |  | 2018 - 2020
Exercised |  |  | (1,500,000 | ) |  |  | 0.12 |  |  | 2017
Balance at December 31, 2017 |  |  | 3,089,119 |  |  |  | 0.40 |  |  | 2018 - 2020
Issued |  |  | 2,491,305 |  |  |  | 0.29 |  |  | 2023 - 2028
Exercised |  |  | - |  |  |  |  |  |  |
Balance at September 30, 2018 |  |  | 5,580,424 |  |  | $ | 0.35 |  |  | 2018 - 2028
Service-Based Stock Options [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of outstanding service-based options |
|  | Number of |
|  | Options |
Balance at December 31, 2016 |  |  | 10,700,273 |
Exercised |  |  | (1,339,473 | )
Issued |  |  | 1,600,000 |
Balance at December 31, 2017 |  |  | 10,960,800 |
Issued |  |  | 600,000 |
Expired |  |  | (500,000 | )
Exercised |  |  | (40,800 | )
Balance at June 30, 2018 |  |  | 11,020,000 |
Summary of significant assumptions used to determine fair values of options issued using Black-Scholes option-pricing model |
Significant assumptions: |  |  |  |
Risk-free interest rate at grant date |  |  | 0.65% - 2.84 | %
Expected stock price volatility |  |  | 96.56% -180.45 | %
Expected dividend payout |  |  | - |
Expected option life-years |  |  | 3 years |
Weighted average grant date fair value |  | $ | 0.02 - 0.32 |
Forfeiture rate |  |  | 0.01 | %
Summary of outstanding service-based options exercise price |
Exercise Price |  |  | Number of Options |  |  | Weighted Average Remaining Contractual Life
$ | 0.20 - $0.25 |  |  |  | 8,720,000 |  |  | 4 years
$ | 0.35 |  |  |  | 725,000 |  |  | 9 years
$ | 0.40 |  |  |  | 1,575,000 |  |  | 4 years
| Total |  |  |  | 11,020,000 |  |  |

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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