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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Share-based Compensation Arrangement by Share-based Payment Award Options and Warrants Vested and Expected to Vest Outstanding and Exercisable [Table Text Block] | The Black-Scholes assumptions used in the three and nine months ended September 30, 2013 and 2012 are as follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2013 |  | 2012 |  | 2013 |  |  | 2012 |
Exercise price |  | - |  | $1.96- $2.27 |  | $ | 1.74 |  |  | $1.70- $2.47 |
Expected dividends |  | - |  | 0% |  |  | 0 | % |  | 0% |
Expected volatility |  | - |  | 153% |  |  | 148 | % |  | 108% - 174% |
Risk free interest rate |  | - |  | 0.63% - 0.65% |  |  | 0.77 | % |  | 0.37% - 1.98% |
Expected life of option |  | - |  | 5 years – 10 years |  |  | 5 years |  |  | 5 years – 10 years |
Expected forfeitures |  | - |  | 0% |  |  | 0 | % |  | 0%
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of stock option activities as of September 30, 2013, and for the year ended December 31, 2012, is as follows:
|  |  |  |  |  |  |  | Weighted |  |  |  |
|  |  |  |  |  |  |  | Average |  |  |  |
|  |  |  |  | Weighted |  | Remaining |  | Aggregate |
|  |  |  |  | Average Exercise |  | Contractual |  | Intrinsic |
|  | Options |  | Price |  | Life |  | Value |
Balance - December 31, 2011 |  |  | 2,979,010 |  | $ | 1.34 |  |  | 6.01 years |  | $ | - |
Granted |  |  | 2,075,000 |  | $ | 2.21 |  |  |  |  |  |  |
Exercised |  |  | (374,851) |  | $ | 0.34 |  |  |  |  |  |  |
Forfeited |  |  | (225,413) |  | $ | 2.37 |  |  |  |  |  |  |
Balance - December 31, 2012 |  |  | 4,453,746 |  | $ | 1.78 |  |  | 6.43 years |  | $ | 1,308,000 |
Granted |  |  | 117,500 |  | $ | 1.74 |  |  |  |  |  |  |
Exercised |  |  | (291,666) |  | $ | 0.79 |  |  |  |  |  |  |
Forfeited |  |  | (475,000) |  | $ | 2.31 |  |  |  |  |  |  |
Balance – September 30, 2013 - outstanding |  |  | 3,804,580 |  | $ | 1.79 |  |  | 5.76 years |  | $ | 932,000 |
Balance – September 30, 2013 - exercisable |  |  | 2,902,307 |  | $ | 1.67 |  |  | 5.27 years |  | $ | 903,000 |
Grant date fair value of options granted - 2013 |  |  |  |  | $ | 185,000 |  |  |  |  |  |  |
Weighted average grant date fair value - 2013 |  |  |  |  | $ | 1.57 |  |  |  |  |  |  |
Grant date fair value of options granted - 2012 |  |  |  |  | $ | 4,468,000 |  |  |  |  |  |  |
Weighted average grant date fair value - 2012 |  |  |  |  | $ | 2.15 |  |  |  |  |  |  |

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- Definition Tabular disclosure relates to share based compensation arrangement by share based payment award options and warrants vested and expected to vest outstanding and exercisable. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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