Debt - Schedule of Outstanding Long-Term Debt (Details) - USD ($) $ in Thousands |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Current portion, outstanding principal | $ (4,097) | $ (7,421) |
| Current portion, unamortized discount and debt issuance costs | 130 | 409 |
| Current portion, net carrying amount | (3,967) | (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 | 4,097 | 7,421 |
| Total debt, unamortized discount and debt issuance costs | (130) | (409) |
| Total debt, net carrying amount | $ 3,967 | $ 7,012 |
| X | ||||||||||
- Definition Current face (par) amount of debt instrument at balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Noncurrent face (par) amount of debt instrument at balance sheet date. No definition available.
|
| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount, after accumulated amortization, of debt discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of debt discount to be amortized within one year or within the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of debt discount to be amortized after one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|