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Note 10 - Financial Instruments (Details) - Derivatives Not Designated as Hedging Instruments by Account Type - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Derivatives Not Designated as Hedging Instruments by Account Type [Abstract]    
Interest rate contracts $ 147,388 $ 297,992
Interest rate contracts 187,328 779
Total derivative liabilities $ 334,716 $ 298,771