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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2017
Shareholders' Equity (Note 9): |
Schedule of Weighted Average Assumptions | The following weighted-average assumptions were used for grants issued during 2017 and 2016 under the ASC No. 718 requirements:
|  | 2017 |  |  | 2016 |
Weighted average risk-free rate |  |  | 1.97 | % |  |  | 1.20 | %
Weighted average volatility |  |  | 113.57 | % |  |  | 111.02 | %
Dividend yield |  |  | 0.00 | % |  |  | 0.00 | %
Expected life |  |  | 7.19 years |  |  |  | 6.17 years |
Summarizes Stock Option Activity | The following table summarizes stock option activity for the year ended December 31, 2017 and 2016:
|  | Outstanding Options |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value |
Outstanding January 1, 2016 |  |  | 136,000 |  |  | $ | 20.38 |  |  |  | 8.67 |  |  | $ | 2,000 |
Granted |  |  | 35,000 |  |  |  | 7.73 |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Cancelled |  |  | (3,000 | ) |  |  | 21.49 |  |  |  | - |  |  |  | - |
Forfeited |  |  | (3,000 | ) |  |  | 15.51 |  |  |  | - |  |  |  | - |
Expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Outstanding December 31, 2016 |  |  | 165,000 |  |  |  | 17.78 |  |  |  | 8.02 |  |  |  | 36,000 |
Granted |  |  | 8,000 |  |  |  | 6.66 |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Cancelled |  |  | (8,000 | ) |  |  | 16.76 |  |  |  | - |  |  |  | - |
Forfeited |  |  | (9,000 | ) |  |  | 9.87 |  |  |  | - |  |  |  | - |
Expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Outstanding December 31, 2017 |  |  | 156,000 |  |  | $ | 17.74 |  |  |  | 7.12 |  |  | $ | - |
Options vested and exercisable at December 31, 2017 |  |  | 112,000 |  |  | $ | 18.71 |  |  |  | 6.92 |  |  | $ | - |
Summarizes Warrant Activity | The following summarizes warrant activity for the year ended December 31, 2017 and 2016:
|  | Outstanding Warrants |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Remaining Contractual Life (in years) |
Outstanding January 1, 2016 |  |  | 132,000 |  |  | $ | 33.64 |  |  |  | 2.18 |
Granted |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |
Outstanding December 31, 2016 |  |  | 132,000 |  |  | $ | 33.64 |  |  |  | 1.18 |
Granted |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |
Forfeited |  |  | (60,000 | ) |  |  | - |  |  |  | - |
Outstanding December 31, 2017 |  |  | 72,000 |  |  | $ | 20.00 |  |  |  | 0.87 |
Balance exercisable at December 31, 2017 |  |  | 72,000 |  |  | $ | 20.00 |  |  |  | 0.87 |

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