Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Debt - Schedule of Outstanding Long-Term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Current portion, outstanding principal $ (4,877) $ (7,421)
Current portion, unamortized discount and debt issuance costs 263 409
Current portion, net carrying amount (4,614) (7,012)
Long-term debt, outstanding principal
Long-term debt, unamortized discount and debt issuance costs
Long-term debt
Hercules Term Loan [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 2,377 7,421
Total debt, unamortized discount and debt issuance costs (58) (409)
Total debt, net carrying amount 2,319 7,012
North Stadium Term Loan [Member]    
Debt Instrument [Line Items]    
Total debt, outstanding principal 2,500
Total debt, unamortized discount and debt issuance costs (205)
Total debt, net carrying amount $ 2,295