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Warrant Liability (Details 3) (USD $) | 12 Months Ended
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Dec. 31, 2012
Summary of changes in fair value of warrant liability |
Number of warrants, ending balance | 9,935,912
Series A Warrants [Member] |
Summary of changes in fair value of warrant liability |
Number of warrants, beginning balance | 8,000,000
Fair value of warrant liability, beginning balance | $ 3,790,160
Number of warrants issued | 2,700,000
Fair value of warrants issued | 1,714,436
Number of warrants exercised | (2,198,571)
Number of warrants expired |
Fair value of warrants exercised | (3,340,155)
Fair value, changes in fair value at period end | 6,992,956
Number of warrants, ending balance | 8,501,429
Fair value of warrant liability, ending balance | 9,157,397
Series B Warrants [Member] |
Summary of changes in fair value of warrant liability |
Number of warrants, beginning balance | 8,000,000
Fair value of warrant liability, beginning balance | 2,220,960
Number of warrants issued |
Fair value of warrants issued |
Number of warrants exercised | (2,700,000)
Number of warrants expired | (5,300,000)
Fair value of warrants exercised | (1,095,802)
Fair value, changes in fair value at period end | (1,125,158)
Number of warrants, ending balance |
Fair value of warrant liability, ending balance |

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- Definition Fair value of warrants issued. + References No definition available. + Details
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- Details
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- Definition Warrants exercised. + References No definition available. + Details
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- Definition Warrants issued. + References No definition available. + Details
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- Definition Warrants outstanding. + References No definition available. + Details
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