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Note 8 - Stockholders' Equity (Details) - Changes in Fair Values of the Warrants (USD $)
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12 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Note 8 - Stockholders' Equity (Details) - Changes in Fair Values of the Warrants [Line Items] | |||
| Balance at | $ 3,747,858 | $ 2,129,091 | |
| Gain (loss) on change in fair value | (1,686,478) | 171,371 | |
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Warrant [Member]
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| Note 8 - Stockholders' Equity (Details) - Changes in Fair Values of the Warrants [Line Items] | |||
| Balance at | 3,747,858 | 2,128,302 | |
| Fair value of warrants | 3,305,245 | 1,957,720 | |
| Gain (loss) on change in fair value | $ (1,685,689) | $ 170,582 | |
| X | ||||||||||
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- Details
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- Definition
Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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