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Warrants (Details) (USD $)
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3 Months Ended | 12 Months Ended |
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Mar. 31, 2013
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Dec. 31, 2012
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| Summary of warrant activity | ||
| Warrants, Balance at the beginning of the period (in shares) | 3,235,982 | 306,388 |
| Weighted Average Price, Balance at the beginning of the period | 3.53 | 19.14 |
| Granted (in shares) | 2,942,094 | |
| Weighted Average Price, Granted | $ 1.87 | |
| Exercised (in shares) | (200,000) | |
| Exercised Weighted Average Price | $ 1.50 | |
| Expired (in Shares) | (12,500) | |
| Expired Weighted Average Price | $ (6.00) | |
| Warrants, Balance at the ending of the period (in shares) | 3,035,982 | 3,235,982 |
| Weighted Average Price, Balance at the ending of the period | 3.62 | 3.53 |
| X | ||||||||||
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- Definition
Class of warrant exercised. No definition available.
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- Definition
Class of warrant exercised weighted average exercise price. No definition available.
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- Definition
Class of warrant expired. No definition available.
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| X | ||||||||||
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- Definition
Class of warrant expired weighted average exercise price. No definition available.
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- Definition
Class of warrant granted in period. No definition available.
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| X | ||||||||||
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- Definition
Class of warrant granted in period weighted average exercise price. No definition available.
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| X | ||||||||||
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- Definition
The exercise price of each class of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate amount of each class of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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