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Note 3 - Share-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Options
   
Weighted Average Exercise Price
   
Weighted Average Remaining Contractual Life (in years)
 
Options outstanding as of December 31, 2012
    1,790,002     $ 1.49       2.64  
Granted at fair value
    -       -       -  
Exercised
    (35,001 )   $ 1.19       -  
Canceled/expired/forfeited
    (50,000 )   $ 1.60       -  
Options outstanding as of March 31, 2013
    1,705,001     $ 1.50       1.79  
Options exercisable as of March 31, 2013
    1,360,001     $ 1.48       1.60