Income Taxes (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Income Taxes. | ||||
| Current Federal, State and Local, Tax Expense (Benefit) | $ 0 | $ 0 | $ 0 | $ 0 |
| Foreign income tax (benefit) expense | $ (12) | $ 27 | $ (12) | $ 27 |