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Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2015
Schedule of Changes in Common Stock Options [Table Text Block]
          Weighted  
          Average  
          Exercise  
    Options     Price  
Outstanding at December 31, 2014   2,165,000   $ 1.71  
Granted   50,000   $ 0.42  
Outstanding at March 31, 2015   2,215,000   $ 1.68  
             
Options exercisable at March 31, 2015   1,583,750   $ 1.75