Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Debt - Schedule of Outstanding Long-Term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total debt, outstanding principal $ 12,091 $ 17,814
Total debt, unamortized discount (941) (1,449)
Total debt, net carrying amount 11,150 16,365
Current portion, outstanding principal (11,391) (17,814)
Current portion, unamortized discount 710 1,449
Current portion, net carrying amount (10,681) (16,365)
Long-term debt, outstanding principal 700
Long-term debt, unamortized discount (231)
Long-term debt 469
Hercules Term Loan [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 10,628 17,051
Total debt, unamortized discount (706) (1,420)
Total debt, net carrying amount 9,922 15,631
Convertible Notes [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 700
Total debt, unamortized discount (231)
Total debt, net carrying amount 469
Magna Note [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 763 763
Total debt, unamortized discount (4) (29)
Total debt, net carrying amount $ 759 $ 734