Revenue - Revenue Contract Estimates (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 29, 2019 |
Mar. 30, 2018 |
|
| Revenue from Contract with Customer [Abstract] | ||
| Favorable adjustments | $ 2,502 | $ 4,152 |
| Unfavorable adjustments | (3,585) | (1,311) |
| Net favorable adjustments | (1,083) | 2,841 |
| Unfavorable adjustments to operating income | $ 400 | |
| Net favorable adjustment to operating income | $ (3,400) | |