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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2016
Shareholders' Equity: |
Schedule of Weighted Average Assumptions | The following weighted-average assumptions were used for grants issued during 2016 and 2015 under the ASC No. 718 requirements:
|  | 2016 |  |  | 2015 |
Weighted average risk-free rate |  |  | 1.20 | % |  |  | 1.20 | %
Weighted average volatility |  |  | 111.02 | % |  |  | 82.80 | %
Dividend yield |  |  | 0.00 | % |  |  | 0.00 | %
Expected life |  |  | 6.17 years |  |  |  | 4.31 years |
Summarizes Stock Option Activity | The following table summarizes stock option activity for the year ended December 31, 2016 and 2015:
|  | Outstanding Options |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value |
Outstanding January 1, 2015 |  |  | 144,000 |  |  | $ | 24.99 |  |  |  | 8.60 |  |  | $ | 285,000 |
Granted |  |  | 43,000 |  |  |  | 20.59 |  |  |  | - |  |  |  | - |
Exercised |  |  | (2,000 | ) |  |  | 14.32 |  |  |  | - |  |  |  | - |
Cancelled |  |  | (26,000 | ) |  |  | 37.56 |  |  |  | - |  |  |  | - |
Forfeited |  |  | (23,000 | ) |  |  | 29.20 |  |  |  | - |  |  |  | - |
Expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Outstanding December 31, 2015 |  |  | 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 |
Options vested and exercisable at December 31, 2016 |  |  | 75,000 |  |  | $ | 20.06 |  |  |  | 7.55 |  |  | $ | 4,000 |
Summarizes Warrant Activity | The following summarizes warrant activity for the year ended December 31, 2016 and 2015:
|  | Outstanding Warrants |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Remaining Contractual Life (in years) |
Outstanding January 1, 2015 |  |  | 132,000 |  |  | $ | 33.64 |  |  |  | 3.18 |
Granted |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |
Outstanding December 31, 2015 |  |  | 132,000 |  |  | $ | 33.64 |  |  |  | 2.18 |
Granted |  |  | - |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |
Outstanding December 31, 2016 |  |  | 132,000 |  |  | $ | 33.64 |  |  |  | 1.18 |
Balance exercisable at December 31, 2016 |  |  | 132,000 |  |  | $ | 33.64 |  |  |  | 1.18 |

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