Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Financial Statements Detail - Additional Information 2 (Details)

v3.3.0.814
Condensed Consolidated Financial Statements Detail - Additional Information 2 (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2012
Feb. 28, 2010
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Class of Warrant or Right [Line Items]          
Reclassification of contingent warrant liability to equity upon exercise of warrants     $ 3,552 $ 2,526  
Warrants issued (in shares)     1,410,474    
Two Year Warrants Issued in December 2014 [Member]          
Class of Warrant or Right [Line Items]          
Warrants outstanding (in shares)     8,097,165   8,097,165
Exercise price of warrants (in dollars per share)         $ 7.90
Fair value of warrant liability     $ 1,000   $ 5,200
Gain (loss) on revaluation of warrant liability     $ 4,200    
Warrant term         2 years
Five Year Warrants Issued in March 2012 [Member]          
Class of Warrant or Right [Line Items]          
Warrants outstanding (in shares) 14,834,577   9,585,153   12,109,418
Exercise price of warrants (in dollars per share) $ 1.76        
Fair value of warrant liability     $ 3,100   $ 26,700
Gain (loss) on revaluation of warrant liability     20,000    
Warrant term 5 years        
Gain (loss) on revaluation of warrant liability related to exercised warrants     $ 2,200    
Warrants exercise (in shares)     2,524,265    
Reclassification of contingent warrant liability to equity upon exercise of warrants     $ 3,600    
Cashless exercise of warrants (in shares)     2,523,515    
Five Year Warrants Issued in February 2010 [Member]          
Class of Warrant or Right [Line Items]          
Warrants outstanding (in shares)   1,260,000      
Exercise price of warrants (in dollars per share)   $ 10.50      
Warrant term   5 years