Fair Value Measurements - Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 29, 2019 |
Jun. 30, 2018 |
|
| Restructuring Reserve [Roll Forward] | ||
| Change in fair value of contingent consideration | $ 116 | $ 0 |
| Fair Value, Measurements, Recurring | ||
| Restructuring Reserve [Roll Forward] | ||
| Beginning balance | 1,964 | |
| Ending balance | 447 | |
| Level 3 | Fair Value, Measurements, Recurring | ||
| Restructuring Reserve [Roll Forward] | ||
| Beginning balance | 1,964 | |
| Change in fair value of contingent consideration | 116 | |
| Payments of contingent consideration liability | (1,633) | |
| Ending balance | $ 447 | |