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Note 10 - Warrant Liability (Details) - Warrant Liability Measured at Fair Value on a Recurring Basis (USD $)
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Mar. 31, 2014
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Dec. 31, 2013
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|---|---|---|
| Warrant Liability: | ||
| Warrant liability fair value | $ 6,754,103 | $ 4,573,123 |
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Fair Value, Inputs, Level 2 [Member]
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| Warrant Liability: | ||
| Warrant liability fair value | $ 6,754,103 | $ 4,573,123 |