Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Income Tax Disclosure [Abstract]
Expense (benefit) from income taxes	$ 4,194	$ 117	$ (767)	$ (1,877)
Effective income tax rate (as a percent)	28.10%	0.40%	(3.50%)	5.30%
Tax expense (benefit) on increased interest expense deduction			$ 2,700
Payroll tax funding deferral	$ 36,000		$ 36,000