Intangible Assets - Estimated Amortization Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Intangible Assets. | |||
| Amortization of Intangible Assets | $ 590 | $ 981 | $ 2,391 |
| Estimated amortization expense | |||
| 2016 | 568 | ||
| 2017 | 568 | ||
| 2018 | 461 | ||
| 2019 | 425 | ||
| 2020 | 425 | ||
| Thereafter | 1,486 | ||
| Total | $ 3,933 | $ 4,644 | |