Quarterly report pursuant to Section 13 or 15(d)

Debt - Schedule of Outstanding Long-Term Debt (Details)

v3.7.0.1
Debt - Schedule of Outstanding Long-Term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total debt, outstanding principal $ 8,981 $ 17,814
Total debt, unamortized discount (549) (1,449)
Total debt, net carrying amount 8,432 16,365
Current portion, outstanding principal (8,981) (17,814)
Current portion, unamortized discount (549) 1,449
Current portion, net carrying amount (8,432) (16,365)
Long-term debt, outstanding principal
Long-term debt, unamortized discount
Long-term debt
Hercules Term Loan [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 8,981 17,051
Total debt, unamortized discount (549) (1,420)
Total debt, net carrying amount 8,432 15,631
Convertible Notes [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal
Total debt, unamortized discount
Total debt, net carrying amount
Magna Note [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 763
Total debt, unamortized discount (29)
Total debt, net carrying amount $ 734