Profit Sharing and 401(k) Plan (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Profit Sharing And 401 (k) Plan [Abstract]
Employee compensation deferral (as a percent)			50.00%
Employer contributions	$ 2.1	$ 1.5	$ 4.2	$ 4.5

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration