Work Force Reduction and Executive Separations - Additional Information (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
|
Oct. 18, 2016
position
|
Jun. 30, 2017
USD ($)
|
Sep. 29, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Restructuring Reserve [Roll Forward] | ||||
| Beginning balance | $ 2,014 | |||
| Severance and related benefit costs - executive separations | 468 | |||
| Payments | (1,260) | |||
| Adjustments | (46) | |||
| Ending balance | $ 1,176 | $ 2,014 | ||
| Work Force Reduction | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Number of positions eliminated | position | 62 | |||
| Restructuring Reserve [Roll Forward] | ||||
| Severance and related benefit costs - executive separations | 1,500 | |||
| CEO Transition | ||||
| Restructuring Reserve [Roll Forward] | ||||
| Severance and related benefit costs - executive separations | $ 1,200 | |||
| 2017 Separation Agreement | ||||
| Restructuring Reserve [Roll Forward] | ||||
| Severance and related benefit costs - executive separations | $ 500 |