Post Employment Benefit Plans - Additional Information (Details) $ in Millions |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Nov. 09, 2016 |
Sep. 11, 2014 |
Sep. 28, 2018
USD ($)
|
Sep. 29, 2017
USD ($)
|
Sep. 28, 2018
USD ($)
plan
|
Sep. 29, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
|
|
| Retirement Benefits [Abstract] | |||||||
| Defined contribution plan, number of plans | plan | 2 | ||||||
| Portion of contributions charged to income | $ 1.0 | $ 0.9 | $ 3.7 | $ 2.3 | |||
| Benefits plan vesting percentage | 100.00% | ||||||
| Contributions accrued by the company | $ 0.1 | $ 0.1 | $ 0.1 | ||||
| Retirement age of executives | 65 years | ||||||