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Stock Purchase Warrants (Tables) | 6 Months Ended
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Jun. 30, 2013
Stock Purchase Warrants [Abstract] |
Schedule of Warrant Activity [Table Text Block] |
A summary of warrant activity for the Company for the six months ended June 30, 2013 and for the year ended December 31, 2012 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 at December 31, 2012 |  |  | 1,632,501 |  |  | 1.99 |
Granted |  |  | - |  |  | - |
Exercised |  |  | - |  |  | - |
Forfeited |  |  | - |  |  | - |
Balance at June 30, 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 June 30, 2013 is as follows:
Exercise Price |  | Warrants Outstanding |  | Warrants Exercisable |  | Weighted Average Remaining Contractual Life |  | Aggregate Intrinsic Value |
$ | 1.14 |  |  | 100,000 |  |  | 100,000 |  |  | 3.59 years |  | $ | 58,000 |
$ | 1.32 |  |  | 18,182 |  |  | 18,182 |  |  | 2.50 years |  | $ | 7,000 |
$ | 1.60 |  |  | 635,855 |  |  | 635,855 |  |  | 4.33 years |  | $ | 76,000 |
$ | 2.20 |  |  | 250,000 |  |  | 50,000 |  |  | 0.71 years |  | $ | - |
$ | 2.22 |  |  | 517,257 |  |  | 517,257 |  |  | 3.41 years |  | $ | - |
$ | 3.30 |  |  | 61,207 |  |  | 61,207 |  |  | 1.92 years |  | $ | - |
$ | 3.75 |  |  | 50,000 |  |  | 50,000 |  |  | 2.63 years |  | $ | - |
$ | 1.99 |  |  | 1,632,501 |  |  | 1,432,501 |  |  | 3.28 years |  | $ | 141,000 |

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- Definition Tabular disclosure of warrant activity. + References No definition available. + Details
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- Definition Tabular disclosure relates to warrant outstanding and exercisable. + References No definition available. + Details
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Data Type: | nonnum:textBlockItemType
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- Details
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