Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Details)

v3.7.0.1
Subsequent Events - Additional Information (Details) - Subsequent Event - Securities Purchase Agreement - Armistice - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended
Apr. 27, 2017
Apr. 30, 2017
Subsequent Event [Line Items]    
Value of securities issued $ 5,000  
Convertible preferred stock, shares issued upon conversion 11,940,000  
Conversion price (usd per share) $ 0.35  
Warrants to purchase shares of common stock, maximum, shares 14,285,714  
Exercise price per share (usd per share) $ 0.40  
Proceeds from sale of shares under common stock purchase agreements $ 4,650 $ 5,000
Common Stock    
Subsequent Event [Line Items]    
Common stock issued (in shares) 2,345,714  
Share price (usd per share) $ 0.35  
Shares of common stock purchased as a percent of outstanding shares 19.99%  
Preferred Stock | Series A Preferred Stock    
Subsequent Event [Line Items]    
Common stock issued (in shares) 4,179