Quarterly report pursuant to Section 13 or 15(d)

Warrant Liability (Details Textual)

v3.2.0.727
Warrant Liability (Details Textual) - USD ($)
 1 Months Ended 6 Months Ended 12 Months Ended
Apr. 09, 2012
Oct. 31, 2014
Jun. 30, 2015
Dec. 31, 2013
Dec. 31, 2012
Class of Warrant or Right [Line Items]          
Notional Liquidation Damages     $ 2,500,000    
Underwritten Public Offering, Description of Units Issued   each unit consisting of one share of common stock and 0.75 of a warrant (Class A Warrant), each full warrant to purchase one share of common stock at an exercise price of $0.60 per share.      
Institutional Investor [Member] | Common Stock [Member]          
Class of Warrant or Right [Line Items]          
Stock Issued During Period Shares Private Placement 6,517,648        
Series A Warrants [Member]          
Class of Warrant or Right [Line Items]          
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.89      
Class of Warrant or Right Exercised During Period       1,109,010  
Proceeds from Warrant Exercises       $ 1,275,000  
Class Of Warrant Or Right Subject To Expiry       5,408,638  
Investment Warrants Expiration Date     Apr. 30, 2018    
Series A Warrants [Member] | Minimum [Member]          
Class of Warrant or Right [Line Items]          
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 0.89    
Series A Warrants [Member] | Maximum [Member]          
Class of Warrant or Right [Line Items]          
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 1.15    
Series A Warrants [Member] | Institutional Investor [Member]          
Class of Warrant or Right [Line Items]          
Warrants To Purchase Common Stock Shares 6,517,648        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1.15        
Series B Warrants [Member]          
Class of Warrant or Right [Line Items]          
Class of Warrant or Right, Exercise Price of Warrants or Rights         $ 0.85
Class of Warrant or Right Exercised During Period         5,761,765
Class Of Warrant Or Right Expired During Period         755,883
Series B Warrants [Member] | Institutional Investor [Member]          
Class of Warrant or Right [Line Items]          
Warrants To Purchase Common Stock Shares 6,517,648        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.85        
Class A Warrant [Member]          
Class of Warrant or Right [Line Items]          
Warrants To Purchase Common Stock Shares   15,750,000      
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.60      
Underwritten Public Offering, Number of Units Issued   21,000,000      
Underwritten Public Offering, Offering Price of Units Issued   $ 0.50      
Underwriter Warrant [Member]          
Class of Warrant or Right [Line Items]          
Warrants To Purchase Common Stock Shares     630,000