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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Schedule of Fair Value of Share Based Payment | The fair value of share-based payment units was estimated using the Black-Scholes option pricing model with the following assumptions and weighted average fair values as follows:
|  | Twelve Months Ended |
|  | December 31, |
|  | 2017 |  |  | 2016 |
Valuation assumptions: |  |  |  |  |  |  |  |
Grant price |  |  | - |  |  | $ | 1.01 - $2.79 |
Exercise price |  |  | - |  |  | $ | 1.01 - $2.79 |
Expected dividend yield |  |  | - |  |  |  | 0 | %
Expected volatility |  |  | - |  |  |  | 96.77% - 98.05 | %
Expected life (in years) |  |  | - |  |  |  | 5 |
Risk-free interest rate |  |  | - |  |  |  | 0.94% - 2.10 | %
Schedule of Stock Option Activity | Stock option activity under the Plans during the periods indicated below is as follows:
|  | Number of Shares Subject to Issuance |  |  | Weighted- average Exercise Price |  |  | Weighted- average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2015 |  |  | 1,901,298 |  |  | $ | 1.46 |  |  |  | 4.51 years |  |  |  |  |
Granted |  |  | 269,543 |  |  | $ | 1.31 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (160,294 | ) |  |  | 2.58 |  |  |  |  |  |  |  |  |
Exercised |  |  | (345,127 | ) |  |  | 1.13 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2016 |  |  | 1,665,420 |  |  | $ | 1.40 |  |  |  | 3.62 years |  |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (24,062 | ) |  |  | 4.06 |  |  |  |  |  |  |  |  |
Exercised |  |  | (10,000 | ) |  |  | 1.01 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2017 |  |  | 1,631,358 |  |  | $ | 1.36 |  |  |  | 1.70 years |  |  | $ | 2,106,669 |
Exercisable at December 31, 2017 |  |  | 1,457,764 |  |  | $ | 1.37 |  |  |  | 1.56 years |  |  | $ | 1,887,777 |
Summary of Stock Options | The following is a summary of stock options as of December 31, 2017:
|  |  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  |  | Number of Options |  |  | Weighted- average Remaining Life |  |  | Weighted- average Exercise Price |  |  | Number of Options |  |  | Weighted- average Exercise Price |
$ | 1.15 to $1.56 |  |  |  | 1,483,298 |  |  |  | 1.70 years |  |  | $ | 1.16 |  |  |  | 1,343,454 |  |  | $ | 1.16 |
$ | 1.75 to $2.79 |  |  |  | 56,000 |  |  |  | 3.49 years |  |  | $ | 2.03 |  |  |  | 22,250 |  |  | $ | 2.31 |
$ | 3.12 to $5.68 |  |  |  | 92,060 |  |  |  | 0.70 years |  |  | $ | 4.15 |  |  |  | 92,060 |  |  | $ | 4.15 |
|  |  |  |  | 1,631,358 |  |  |  | 1.70 years |  |  | $ | 1.36 |  |  |  | 1,457,764 |  |  | $ | 1.37 |
Schedule of Restricted Stock Units Outstanding |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2015 |  |  | 67,077 |  |  | $ | 1.56 |  |  | $ | - |
Granted |  |  | 86,271 |  |  |  | 1.76 |  |  |  |  |
Vested and Settled in Shares |  |  | (120,634 | ) |  |  | 1.60 |  |  |  |  |
Canceled / Expired |  |  | - |  |  |  | - |  |  |  |  |
Outstanding at December 31, 2016 |  |  | 32,714 |  |  |  | 1.89 |  |  |  | 26,010 |
Granted |  |  | 23,352 |  |  |  | 2.87 |  |  |  |  |
Vested and Settled in Shares |  |  | (50,207 | ) |  |  | 2.31 |  |  |  |  |
Canceled / Expired |  |  | - |  |  | $ | - |  |  |  | $ |
Outstanding at December 31, 2017 |  |  | 5,859 |  |  | $ | 2.56 |  |  | $ | - |
Schedule of Share Based Compensation Expense | Share based compensation expense for the years ended December 31, 2017 and 2016 is as follows:
|  | Years Ended December 31, |
Compensation cost recognized: |  | 2017 |  |  | 2016 |
Stock options |  | $ | 368,465 |  |  | $ | 775,338 |
Restricted stock units |  |  | 67,214 |  |  |  | 160,561 |
|  | $ | 435,679 |  |  | $ | 935,899 |
Schedule of Stock Based Compensation | Share based compensation is included in operating expenses as follows:
|  | Years Ended December 31, |
|  | 2017 |  |  | 2016 |
General and administrative |  | $ | 408,772 |  |  | $ | 873,392 |
Research and development |  |  | 26,907 |  |  |  | 62,507 |
|  | $ | 435,679 |  |  | $ | 935,899 |

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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=96867065&loc=d3e5070-113901 + Details
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