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Stock-based Compensation (Schedule of Allocated Stock-Based Compensation) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Stock-based compensation    
Total $ 25,388 $ 283,692
General and Administrative Expense [Member]
   
Stock-based compensation    
Total 25,388 185,478
Research and Development Expense [Member]
   
Stock-based compensation    
Total    $ 98,214