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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Awards and Restricted Stock Grants | A summary of stock option awards and restricted stock grants for the six-months ended June 30, 2019 is presented below:
|  | Stock Options |  |  | Restricted Stock Awards |  |  | Weighted Average |
|  | Options Outstanding |  |  | Weighted Average Exercise Price |  |  | Non-vested Restricted Stock Outstanding |  |  | Weighted Average Grant Date Fair Value |  |  | Contractual Terms of Equity Awards (in years) |
Equity awards outstanding at January 1, 2019 |  |  | 3,148,743 |  |  | $ | 2.67 |  |  |  | 22,500 |  |  | $ | 2.72 |  |  |  |  |
Equity awards granted |  |  | 805,004 |  |  | $ | 2.16 |  |  |  | 15,500 |  |  | $ | 2.17 |  |  |  |  |
Vested and issued |  |  | - |  |  | $ | - |  |  |  | (10,500 | ) |  | $ | 2.49 |  |  |  |  |
Equity awards forfeited, cancelled or expired |  |  | (11,355 | ) |  | $ | 2.37 |  |  |  | - |  |  | $ | - |  |  |  |  |
Equity awards outstanding at June 30, 2019 |  |  | 3,942,392 |  |  | $ | 2.56 |  |  |  | 27,500 |  |  | $ | 2.30 |  |  |  | 8.9 |
Aggregate intrinsic value of outstanding equity awards at June 30, 2019 |  | $ | - |  |  |  |  |  |  | $ | 27,500 |  |  |  |  |  |  |  |  |
Equity awards exercisable at June 30, 2019 |  |  | 2,420,261 |  |  | $ | 2.77 |  |  |  |  |  |  |  |  |  |  |  | 8.7 |
Aggregate intrinsic value of equity awards exercisable at June 30, 2019 |  | $ | 50,050 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Assumptions Used to Determine Fair Value of Options Granted | The Company used the following assumptions for determining the fair value of options granted under the Black-Scholes option pricing model:
|  | Six Months Ended June 30, |
|  | 2019 |  |  | 2018 |
Risk-free interest rate |  |  | 2.42% - 2.65 | % |  |  | 3.08 | %
Expected volatility |  |  | 101.3 -106.2 | % |  |  | 99.9 - 100.0 | %
Expected life (in years) |  |  | 7.5 - 9.3 |  |  |  | 9.5-10.0 |
Expected dividend yield |  |  | - | % |  |  | - | %

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- Definition The tabular disclosure for share-based compensation, stock options and restricted stock awards, activity. + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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