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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 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 years ended December 31, 2013 and 2012 are as follows:
|  | Year ended December 31,
|  | 2013 |  | 2012
Exercise price |  | $1.64 - $1.74 |  | $1.69 - $2.47
Expected dividends |  | 0% |  | 0%
Expected volatility |  | 141% - 154% |  | 108% - 174%
Risk fee interest rate |  | 0.77% - 2.54% |  | 0.37% - 1.98%
Expected life of option |  | 5 – 10 years |  | 5 - 10 years
Expected forfeitures |  | 0% |  | 0%
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of stock option activities for the year ended December 31, 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 |  |  |  | $ | 661,000 |
Forfeited |  |  | (225,413) |  | $ | 2.37 |  |  |  |  |  |
Balance - December 31, 2012 |  |  | 4,453,746 |  | $ | 1.78 |  | 6.43 years |  | $ | 1,308,000 |
Granted |  |  | 222,500 |  | $ | 1.69 |  |  |  |  |  |
Exercised |  |  | (291,666) |  | $ | 0.79 |  |  |  | $ | 71,000 |
Forfeited |  |  | (475,000) |  | $ | 2.30 |  |  |  |  |  |
Balance - December 31, 2013 - outstanding |  |  | 3,909,580 |  | $ | 1.78 |  | 5.59 years |  | $ | 785,000 |
Balance - December 31, 2013 - exercisable |  |  | 3,153,537 |  | $ | 1.69 |  | 5.24 years |  | $ | 773,000 |
Grant date fair value of options granted - 2013 |  |  |  |  | $ | 350,000 |  |  |  |  |  |
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 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] | The options outstanding and exercisable at December 31, 2013 are as follows:
Options Outstanding |  | Options Exercisable |
|  |  |  |  | Weighted |  | Weighted Average |  |  |  |  | Weighted |  | Weighted Average |
Range of |  |  |  |  | Average |  | Remaining |  |  |  |  | Average |  | Remaining |
Exercise Price |  | Options |  | Exercise Price |  | Contractual Life |  | Options |  | Exercise Price |  | Contractual Life |
$0.09 - $2.00 |  |  | 2,093,196 |  | $ | 1.29 |  | 4.73 years |  |  | 1,901,737 |  | $ | 1.25 |  | 4.64 years |
$2.01 - $3.00 |  |  | 1,770,560 |  |  | 2.28 |  | 6.65 years |  |  | 1,205,976 |  |  | 2.26 |  | 6.25 years |
$3.01 - $6.00 |  |  | 45,824 |  |  | 5.24 |  | 3.62 years |  |  | 45,824 |  |  | 5.24 |  | 3.62 years |
$0.09 - $6.00 |  |  | 3,909,580 |  | $ | 1.78 |  | 5.59 years |  |  | 3,153,537 |  | $ | 1.69 |  | 5.24 years |
The options outstanding and exercisable at December 31, 2012 are as follows:
Options Outstanding |  | Options Exercisable |
|  |  |  |  | Weighted |  | Weighted Average |  |  |  |  | Weighted |  | Weighted Average |
Range of |  |  |  |  | Average |  | Remaining |  |  |  |  | Average |  | Remaining |
Exercise Price |  | Options |  | Exercise Price |  | Contractual Life |  | Options |  | Exercise Price |  | Contractual Life |
$0.09 - $2.00 |  |  | 2,162,362 |  | $ | 1.78 |  | 5.76 years |  |  | 1,801,187 |  | $ | 1.14 |  | 5.52 years |
$2.01 - $3.00 |  |  | 2,212,227 |  |  | 2.26 |  | 7.15 years |  |  | 1,011,533 |  |  | 2.17 |  | 6.14 years |
$3.01 - $6.00 |  |  | 79,157 |  |  | 4.87 |  | 4.49 years |  |  | 79,157 |  |  | 4.87 |  | 4.49 years |
$0.09 - $6.00 |  |  | 4,453,746 |  | $ | 1.78 |  | 6.43 years |  |  | 2,891,877 |  | $ | 1.60 |  | 5.71 years |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non Vested and Expected to Vest Exercisable [Table Text Block] | The following is a summary of the Company’s non-vested stock options at December 31, 2013:
|  |  |  |  | Weighted Average |
|  | Unvested |  | Grant |
|  | Stock Options |  | Date Fair Value |
Non-vested - December 31, 2012 |  |  | 1,561,869 |  | $ | 2.11 |
Granted |  |  | 222,500 |  |  | 1.69 |
Vested/Exercised |  |  | (883,882) |  |  | 1.93 |
Forfeited/Cancelled |  |  | (144,444) |  |  | 2.27 |
Non-vested - December 31, 2013 |  |  | 756,043 |  | $ | 2.17 |
Weighted average remaining period for vesting |  |  | 1.30 years |  |  |  |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | The assumptions used by the Company are summarized in the following table:
Exercise price |  | $ | 2.20 |
Expected dividends |  |  | 0 | %
Expected volatility |  |  | 110 | %
Risk free interest rate |  |  | 0.26 | %
Expected life of warrant |  |  | 2 years |
The assumptions used by the Company are summarized in the following table:
Exercise price |  | $ | 1.14 |
Expected dividends |  |  | 0 | %
Expected volatility |  |  | 174 | %
Risk free interest rate |  |  | 0.71 | %
Expected life of warrant |  |  | 5 years |
Schedule of Warrant Activity [Table Text Block] | A summary of warrant activity for the Company for the year ended December 31, 2012 and for the year ended December 31, 2013 is as follows:
|  |  |  |  | Weighted Average |
|  | Number of Warrants |  | Exercise Price |
Balance at December 31, 2011 |  |  | 3,259,186 |  | $ | 1.95 |
Granted |  |  | 985,855 |  |  | 1.71 |
Exercised |  |  | (1,768,167) |  |  | 1.11 |
Forfeited |  |  | (844,373) |  |  | 3.32 |
Balance as December 31, 2012 |  |  | 1,632,501 |  |  | 1.99 |
Granted |  |  | - |  |  | - |
Exercised |  |  | - |  |  | - |
Forfeited |  |  | - |  |  | - |
Balance as December 31, 2013 |  |  | 1,632,501 |  | $ | 1.99 |
Schedule of Warrant Outstanding and Exercisable [Table Text Block] | A summary of all outstanding and exercisable warrants as of December 31, 2013 is as follows:
|  |  |  |  |  |  |  |  | Weighted Average |  |  |  |
Exercise |  | Warrants |  | Warrants |  | Remaining |  | Aggregate |
Price |  | Outstanding |  | Exercisable |  | Contractual Life |  | Intrinsic Value |
$ | 1.14 |  |  | 100,000 |  |  | 100,000 |  |  | 3.09 years |  | $ | 43,000 |
$ | 1.32 |  |  | 18,182 |  |  | 18,182 |  |  | 2.00 years |  | $ | 4,000 |
$ | 1.60 |  |  | 635,855 |  |  | 635,855 |  |  | 3.82 years |  | $ | - |
$ | 2.20 |  |  | 250,000 |  |  | 50,000 |  |  | 0.20 years |  | $ | - |
$ | 2.22 |  |  | 517,257 |  |  | 517,257 |  |  | 2.91 years |  | $ | - |
$ | 3.30 |  |  | 61,207 |  |  | 61,207 |  |  | 1.41 years |  | $ | - |
$ | 3.75 |  |  | 50,000 |  |  | 50,000 |  |  | 2.13 years |  | $ | - |
$ | 1.99 |  |  | 1,632,501 |  |  | 1,432,501 |  |  | 2.77 years |  | $ | 47,000 |

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