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Note 2 - Liquidity (Details Textual) - USD ($) |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 16, 2016 | Apr. 15, 2016 | Apr. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Subsequent Event [Member] | Private Placement [Member] | Including Conversion of Principal and Interest [Member] | Series B Preferred Stock [Member] |  |  |  |  |  |
Proceeds from Issuance of Private Placement |  |  | $ 4,635,575 |  |  |
Proceeds From Issuance of Private Placement, Net of Issuance Costs |  |  | $ 4,283,438 |  |  |
Subsequent Event [Member] | Private Placement [Member] |  |  |  |  |  |
Proceeds from Issuance of Private Placement | $ 4,635,575 |  |  |  |  |
Proceeds From Issuance of Private Placement, Net of Issuance Costs | $ 4,283,438 |  |  |  |  |
Subsequent Event [Member] | Series B Preferred Stock [Member] |  |  |  |  |  |
Proceeds from Issuance of Private Placement |  | $ 525,325 |  |  |  |
Scenario, Forecast [Member] |  |  |  |  |  |
Effect on Future Cash Flows, Amount |  |  |  | $ 2,691,000 |  |
Net Income (Loss) Attributable to Parent |  |  |  |  | $ (1,023,422) | $ (302,481)
Retained Earnings (Accumulated Deficit) |  |  |  |  | (6,306,297) | $ (5,282,875)
Net Working Capital |  |  |  |  | $ (675,015) |

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