8. Derivative liability (Details) (USD $)
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9 Months Ended | 12 Months Ended |
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Sep. 30, 2012
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Dec. 31, 2011
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Derivative [Line Items] | ||
Risk-free interest rate | 0.10% | 0.12% |
Expected volatility | 206.00% | 92.00% |
Expected life (in years) | 0.29 | 0.75-1.00 |
Expected dividend yield | 0 | 0 |
Total Fair Value | $ 3,035,739 | $ 1,643,139 |
2009 Summer Warrants [Member]
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Derivative [Line Items] | ||
Total Fair Value | 332,998 | |
2009 Wellfleet Warrants [Member]
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Derivative [Line Items] | ||
Total Fair Value | 17,807 | |
2009 Fall Warrants [Member]
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Derivative [Line Items] | ||
Total Fair Value | $ 3,035,739 | $ 1,292,334 |
X | ||||||||||
- Definition
Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Details
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X | ||||||||||
- Definition
Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
expected dividend yield No definition available.
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X | ||||||||||
- Definition
Custom Element. No definition available.
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