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Fair Value Measurement (Details Textual) - $ / shares
 1 Months Ended
Jan. 24, 2014
Sep. 12, 2013
Dec. 31, 2016
Class of Warrant or Right, Outstanding 2,479,935 2,810,071  
Warrants Issued 2,479,935 2,945,428  
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 5.25
Placement Agents [Member]      
Warrants Issued 76,306 58,910  
Warrant Expiration Term 5 years 5 years  
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 6.05 $ 5.25  
Scientific Advisory Board [Member]      
Class of Warrant or Right, Outstanding     5,425,222