Quarterly report pursuant to Section 13 or 15(d)

Warrants - Summary of Warrant Activity (Details)

v3.10.0.1
Warrants - Summary of Warrant Activity (Details) - $ / shares
9 Months Ended
Jun. 30, 2018
Sep. 30, 2018
Apr. 02, 2018
Dec. 31, 2017
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 3.71    
Warrants Outstanding (in shares)   10,055,000   10,055,000
Warrant Issued With | Non-derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 5.49    
Warrants Outstanding (in shares)   4,412,000   3,969,000
Warrant Issued For | Derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 2.32    
Warrants Outstanding (in shares)   5,643,000   6,086,000
Financing | Warrant Issued With | Non-derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 10.00    
Warrants Outstanding (in shares)   243,000   243,000
Financing | Warrant Issued With | Non-derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 15.00    
Warrants Outstanding (in shares)   276,000   276,000
2017 Debt        
Class of Warrant or Right [Line Items]        
Warrants Outstanding (in shares)     443,262  
2017 Debt | Warrant Issued With | Non-derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 0.92    
Warrants Outstanding (in shares)   443,000    
2017 Debt | Warrant Issued For | Derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share) $ 0.92 $ 2.82    
Warrants Outstanding (in shares)       443,000
2015 Offering | Warrant Issued With | Non-derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 5    
Warrants Outstanding (in shares)   3,450,000   3,450,000
2016 Offerings | Warrant Issued For | Derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 2.25    
Warrants Outstanding (in shares)   1,968,000   1,968,000
2017 Offering | Warrant Issued For | Derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 2.35    
Warrants Outstanding (in shares)   3,500,000   3,500,000
2017 Offering | Warrant Issued For | Derivative warrants        
Class of Warrant or Right [Line Items]        
Warrants Exercise Price (usd per share)   $ 2.5    
Warrants Outstanding (in shares)   175,000   175,000