Fair Value Measurements - Recurring Basis (Details) - Recurring basis - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Fair Value | ||
| Financial liabilities | $ 11,387 | |
| Warrants | ||
| Fair Value | ||
| Financial liabilities | $ 5,735 | |
| Significant Other Unobservable Inputs (Level 3) | ||
| Fair Value | ||
| Financial liabilities | $ 11,387 | |
| Significant Other Unobservable Inputs (Level 3) | Warrants | ||
| Fair Value | ||
| Financial liabilities | $ 5,735 |