Annual report pursuant to Section 13 and 15(d)

Equity (Details Narrative)

v3.3.1.900
Equity (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Nov. 26, 2014
Feb. 12, 2014
Feb. 11, 2014
Nov. 30, 2015
Sep. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Proceeds from issuance of common stock, net of issuance costs           $ 4,337 $ 15,369
Outstanding warrants exercisable           2,200,000  
Proceeds from offering           $ 5,863
Change in fair value of derivative liabilities           $ 7,605 $ 251
Fair value of excepted term           3 years 8 months 12 days 4 years 8 months 12 days
Convertible preferred stock, shares outstanding           0 0
November 2014 Secondary Offering [Member]              
Shares issued price per share $ 17.10            
Exercise price of warrants $ 22.20            
Other Warrants [Member]              
Warrants converted into shares of common stock           17  
September 2015 Offering [Member]              
Common stock shares, issued         874,891    
Shares issued price per share         $ 5.72    
Proceeds from issuance of common stock, net of issuance costs         $ 5,000    
Placement agent fees and offering expenses         $ 663 $ 821  
September 2015 Offering [Member] | Placement Agent [Member]              
Shares issued price per share           $ 7.05  
Outstanding warrants exercisable           43,745  
Fair value adjustment of warrants           $ 157  
September 2015 Offering [Member] | Series A Warrants [Member]              
Placement agent fees and offering expenses           $ 585  
Warrants converted into shares of common stock           1,315,781  
Warrants exercised           3,924,687  
Change in number of warrants           962,969  
Class of warrant outstanding           1,237,365  
Warrants expiration date           Dec. 11, 2020  
Fair value adjustment of warrants           $ 14,400  
Proceeds from offering           4,900  
Gross proceeds form offering           5,000  
Proceeds from issuance of common stock, net of issuance costs           131  
Change in fair value of derivative liabilities           $ 9,500  
September 2015 Offering [Member] | Series A Warrants [Member] | Minimum [Member]              
Change in number of warrants       3,324,192      
Exercise price of warrants       $ 1.50      
September 2015 Offering [Member] | Series A Warrants [Member] | Maximum [Member]              
Change in number of warrants       4,199,082      
Exercise price of warrants       $ 7.05      
September 2015 Offering [Member] | Series A Warrants [Member] | Investors [Member]              
Outstanding warrants exercisable         874,891    
September 2015 Offering [Member] | Series B Warrants [Member]              
Proceeds from warrant exercises       $ 5,000      
Warrants converted into shares of common stock       3,324,192      
Warrants exercised       874,891      
September 2015 Offering [Member] | Series B Warrants [Member] | Investors [Member]              
Outstanding warrants exercisable         874,891    
September 2015 Offering [Member] | Series C Warrants [Member]              
Proceeds from warrant exercises       $ 1,400      
Warrants converted into shares of common stock       962,969      
Warrants exercised       962,969      
Change in number of warrants       1,093,613      
Exercise price of warrants       $ 1.50      
Class of warrant outstanding       130,644      
Warrants expiration date       Dec. 30, 2015      
September 2015 Offering [Member] | Series C Warrants [Member] | Investors [Member]              
Outstanding warrants exercisable         874,891    
November 2014 Secondary Offering [Member]              
Common stock shares, issued 762,777         2,546,856  
Placement agent fees and offering expenses $ 1,700            
Proceeds from warrant exercises $ 11,300            
Warrants converted into shares of common stock           869,825  
Class of warrant outstanding           7,368  
Warrants expiration date Nov. 26, 2019            
Noncash exercise provision threshold 120 days            
Cash to exercise warrants           $ 88  
Shares issued during period           58,000  
November 2014 Secondary Offering [Member] | Warrants [Member]              
Volatility rate 135.00%            
Fair value of excepted term 5 years            
November 2014 Secondary Offering [Member] | Over-Allotment Option [Member] | Underwriter [Member]              
Outstanding warrants exercisable 114,417            
IPO [Member]              
Common stock shares, issued   245,527          
IPO [Member] | Underwriters [Member]              
Outstanding warrants exercisable     2,344,731        
Warrants exercised     10,656        
Convertible preferred stock, shares outstanding     80,910,394        
Number of preferred stock shares converted into common stock shares     535,319        
Convertible preferred stock, value     $ 161,500        
IPO [Member] | Underwriters [Member] | Over-Allotment Option [Member]              
Common stock shares, issued   12,194          
Shares issued price per share   $ 86.25          
Proceeds from issuance of common stock, net of issuance costs   $ 15,400          
Placement agent fees and offering expenses   $ 5,800          
IPO [Member] | Series F Convertible Preferred Stock [Member]              
Conversion of convertible preferred stock     $ 120.00        
Other Issuances [Member]              
Stock issued for service           18,000  
Restricted common stock issued           56,891  
Shares withheld           13,789  
Shares issued during period           $ 120,000