Accrued Expenses and Long-term Liabilities - Schedule of Long Term Liabilities (Details) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Warrant liability | $ 358 | $ 361 |
| Uncertain tax positions | 3,895 | 3,838 |
| Other | 120 | |
| Total other long-term liabilities | $ 4,253 | $ 4,319 |
| X | ||||||||||
- Definition Warrant liability noncurrent. No definition available.
|
| X | ||||||||||
- Definition Amount of obligation due after one year or beyond the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount recognized for uncertainty in income taxes classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|