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Note 9 - Stock Warrants (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
    2013     2012  
   
Warrants
   
Weighted
Average
Exercise Price
   
Warrants
   
Weighted
Average
Exercise Price
 
                         
Beginning balance
    782,259     $ 0.85       1,235,877     $ 0.35  
                                 
Stock warrants granted
    -       -       -       -  
Stock warrants expired
    -       -       -       -  
Stock warrants exercised
    (427,713 )     0.55       -       -  
                                 
Ending balance
    354,546     $ 1.21       1,235,877     $ 0.35