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Note 5 - Loss Per Share (Tables)
12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
    Year Ended
December 31,
    2015   2014
Numerator:                
Net loss available in basic and diluted calculation   $ (4,790,530 )   $ (6,833,568 )
                 
Denominator:                
Weighted average common shares outstanding-basic     3,880,828       2,990,471  
                 
Effect of dilutive stock options, warrants and preferred stock (1)     -       -  
                 
Weighted average common shares outstanding-diluted     3,880,828       2,990,471  
                 
Loss per common share-basic and diluted   $ (1.23 )   $ (2.29 )