Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Details)

v3.2.0.727
Equity - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Nov. 26, 2014
Jun. 30, 2015
Class Of Stock [Line Items]    
Noncash exercise provision threshold   120 days
Restricted common stock issued   30,000
Common stock shares issued upon vesting of restricted stock units   853,365
Shares withheld   206,380
Shares issued during period   $ 120
Common Stock    
Class Of Stock [Line Items]    
Equity issuance unit 1  
Common stock shares issued upon conversion from preferred stock   242
Warrant    
Class Of Stock [Line Items]    
Equity issuance unit 1  
Volatility rate   135.00%
Secondary Offering    
Class Of Stock [Line Items]    
Common stock shares, issued 11,441,646  
Common stock share issue price under offering, per share price $ 1.14  
Exercise price of warrants (in usd per share) $ 1.48  
Secondary Offering Warrant    
Class Of Stock [Line Items]    
Warrants exercised   13,015,912
Class of warrant outstanding   141,980
Cash to exercise warrants   $ 112
Outstanding warrants exercisable   190,591
Secondary Offering Warrant | Underwriter Option    
Class Of Stock [Line Items]    
Common stock shares, issued 1,716,246  
Secondary Offering Warrant | Common Stock    
Class Of Stock [Line Items]    
Warrants converted into shares of common stock   38,147,958