XML 62 R51.htm IDEA: XBRL DOCUMENT v3.5.0.2
Warrants - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended
May 31, 2016
May 12, 2016
Jun. 30, 2016
Nov. 30, 2015
Class of Warrant or Right [Line Items]        
Number of shares sold in underwritten public offering 48,543,692      
Warrants to purchase of common stock       159,304
Fair value of warrants liability $ 44,700      
Exercise price of warrants $ 1.50      
Class of warrants exercised     0  
Warrant fair value adjustment     $ 5,306  
A Warrants        
Class of Warrant or Right [Line Items]        
Warrants to purchase of common stock 36,407,765      
Fair value of warrants liability   $ 12,800 $ 18,100  
Class of warrants expiration period upon issuance 2 years      
Warrant fair value adjustment   $ 5,306    
Warrant liability issuance date   May 12, 2016    
B Warrants        
Class of Warrant or Right [Line Items]        
Warrants to purchase of common stock 12,135,921      
Fair value of warrants liability   $ 5,000    
Class of warrants expiration period upon issuance 30 months      
Warrants exercisable date 2017-05      
Maximum | A Warrants        
Class of Warrant or Right [Line Items]        
Warrants to purchase of common stock 36,407,765      
Maximum | B Warrants        
Class of Warrant or Right [Line Items]        
Warrants to purchase of common stock 12,135,921      
Registered Offering        
Class of Warrant or Right [Line Items]        
Number of shares sold in underwritten public offering 48,543,687