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Warrants (Details 1)
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Jul. 31, 2012
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Jun. 30, 2012
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Mar. 23, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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|---|---|---|---|---|---|
| Summary of warrants outstanding | |||||
| Exercise Price | 1.50 | 4.12 | 2.00 | 19.14 | 19.14 |
| Warrants Outstanding | 2,477,313 | 306,388 | 306,388 | ||
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Range 1 [Member]
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| Summary of warrants outstanding | |||||
| Exercise Price | 2.00 | ||||
| Warrants Outstanding | 2,170,925 | ||||
| Warrants expiration dates | Mar. 23, 2015 | ||||
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Range 2 [Member]
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| Summary of warrants outstanding | |||||
| Exercise Price | 6.00 | ||||
| Warrants Outstanding | 12,500 | ||||
| Warrants expiration dates | Sep. 14, 2012 | ||||
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Range 3 [Member]
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| Summary of warrants outstanding | |||||
| Exercise Price | 10.00 | ||||
| Warrants Outstanding | 5,000 | ||||
| Warrants expiration dates | Apr. 15, 2014 | ||||
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Range 4 [ Member]
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| Summary of warrants outstanding | |||||
| Exercise Price | 15.00 | ||||
| Warrants Outstanding | 161,000 | ||||
| Warrants expiration dates | May 30, 2013 | ||||
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Range 5 [Member]
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| Summary of warrants outstanding | |||||
| Exercise Price | 26.00 | ||||
| Warrants Outstanding | 127,888 | ||||
| Warrants expiration dates | May 30, 2013 |