Quarterly report pursuant to Section 13 or 15(d)

Debt - Future Principal Payments on Debt (Details)

v3.3.0.814
Debt - Future Principal Payments on Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Line Of Credit Facility [Line Items]    
Total debt, net carrying amount $ 19,973 $ 22,131
Hercules Term Loan    
Line Of Credit Facility [Line Items]    
Total debt, net carrying amount 17,824 $ 19,070
Magna August Note    
Line Of Credit Facility [Line Items]    
Total debt, net carrying amount 2,149  
Convertible Notes Payable    
Line Of Credit Facility [Line Items]    
2015 1,790  
2016 9,815  
2017 8,567  
2018 818  
Total debt, net carrying amount 20,990  
Convertible Notes Payable | Hercules Term Loan    
Line Of Credit Facility [Line Items]    
2015 1,790  
2016 7,666  
2017 8,567  
2018 818  
Total debt, net carrying amount 18,841  
Convertible Notes Payable | Magna August Note    
Line Of Credit Facility [Line Items]    
2015 0  
2016 2,149  
2017 0  
2018 0  
Total debt, net carrying amount $ 2,149