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Loss Per Share (Details) - shares
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Warrants    
Class of Stock [Line Items]    
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares 3,516,452 3,555,956
Stock Options [Member]    
Class of Stock [Line Items]    
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares 6,611,480 4,459,923
Restricted Stock [Member]    
Class of Stock [Line Items]    
Dilutive Securities Excluded From Computation Of Earnings Per Share, Shares 113,579 233,982