Income Taxes - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Income Tax Disclosure [Abstract] | ||||
| Effective tax rate | (6.00%) | (3.20%) | (3.60%) | 2.70% |
| Income tax expense (benefit) | $ 1,719 | $ 413 | $ 4,242 | $ (1,166) |
| Discrete tax benefit related to dispositions on incentive stock options | $ 1,700 | |||