Work Force Reduction and CEO Transition - Additional Information (Details) $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2016
USD ($)
position
| |
| Restructuring Reserve [Roll Forward] | |
| Beginning balance | $ 11 |
| Payments | (721) |
| Ending balance | $ 2,014 |
| Work Force Reduction | |
| Restructuring Cost and Reserve [Line Items] | |
| Number of positions eliminated | position | 62 |
| Restructuring Reserve [Roll Forward] | |
| Severance and benefit related costs | $ 1,479 |
| CEO Transition | |
| Restructuring Reserve [Roll Forward] | |
| Severance and benefit related costs | 1,245 |
| CEO Transition | CEO | |
| Restructuring Reserve [Roll Forward] | |
| Severance and benefit related costs | $ 0 |