7. Derivative liability (Details) (USD $)
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0 Months Ended | 12 Months Ended | ||||
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Sep. 30, 2013
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Dec. 31, 2012
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Jan. 15, 2013
2009 Fall Warrants [Member]
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Dec. 31, 2012
2009 Fall Warrants [Member]
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Jan. 15, 2013
Warrants
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Dec. 31, 2012
Warrants
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Derivative [Line Items] | ||||||
Risk-free interest rate | 0.09% | 0.02% | ||||
Expected volatility | 165.00% | 165.00% | ||||
Expected life (in years) | 15 days | 15 days | ||||
Expected dividend yield | 0.00% | 0.00% | ||||
Derivative liabilitiy | $ 0 | $ 3,221,138 | $ 3,441,752 | $ 3,221,138 |
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- Definition
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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X | ||||||||||
- Definition
Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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