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Note 7 - Earnings (Loss) Per Share - Common Stock ("EPS") (Tables)
 6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Three Months ended
June 30,
 
 
Six Months ended
June 30,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
Basic Numerator:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                 
Net income (loss)
  $ (1,375,489
)
   $ 753,146     $ (2,538,703
)
   $ (170,957
)
Convertible preferred stock dividends
     (200,625
)
     -       (401,250
)
     -  
Net income (loss) available to common stockholders
   $ (1,576,114
)
   $ 753,146     $ (2,939,953
)
   $ (170,957
)
Basic Denominator
     66,276,050       66,001,260       66,199,903       66,001,260  
Per Share Amount
   $ (0.02
)
   $ 0.01     $ (0.04
)
   $ (0.00
)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
 
 
Three Months ended
June 30,
 
 
Six Months ended
June 30,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
                                 
Preferred stock
     65,000,000       -       65,000,000       -  
Stock options
     156,483       -       41,934       34,349  
Warrants
     -       -       -       -  
Total
     65,156,483       -       65,041,934       34,349  
 
 
Three Months ended
June 30,
 
 
Six Months ended
June 30,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
                                 
Stock options
     2,580,000       3,475,000       2,755,000       3,087,500  
Warrants
     20,455,414       19,622,081       20,455,414       19,622,081  
Total
     23,035,414       23,097,081       23,210,414       22,709,581