Income Taxes - Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Sep. 24, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Effective Income Tax Rate Reconciliation, Amount:
Tax at federal statutory rate									$ 36,979	$ 38,928	$ 10,685
State and local taxes, net									12,335	4,800	3,095
Effect of enacted changes in tax laws									(1,872)	68,747	0
Increase/(decrease) in uncertain tax positions									2,288	(2,277)	(4,534)
Loss/(gain) on Company-owned life insurance									449	(1,916)	(736)
Nondeductible expense									2,399	1,021	1,115
Domestic manufacturing deduction									0	0	(1,820)
Foreign Earnings and Dividends									0	458	(2,418)
Other, net									(3,947)	(5,805)	(966)
Income tax expense/(benefit)	$ 23,289	$ 10,092	$ 9,999	$ 5,251	$ 63,083	$ 23,420	$ 6,711	$ 10,742	$ 48,631	$ 103,956	$ 4,421
Effective Income Tax Rate Reconciliation, Percent:
Tax at federal statutory rate (% of pre-tax)									21.00%	35.00%	35.00%
State and local taxes, net (% of pre-tax)									7.00%	4.30%	10.10%
Effect of enacted changes in tax laws (% of pre-tax)									(1.00%)	61.80%	0.00%
Reduction in uncertain tax positions (% of pre-tax)									1.30%	(2.00%)	(14.90%)
Loss/(gain) on Company-owned life insurance (% of pre-tax)									0.20%	(1.70%)	(2.40%)
Non deductible expense, net (% of pre-tax)									1.30%	0.90%	3.70%
Domestic manufacturing deduction (% of pre-tax)									(0.00%)	(0.00%)	(6.00%)
Foreign Earnings and Dividends (% of pre-tax)									0.00%	0.40%	(7.90%)
Other, net (% of pre-tax)									(2.20%)	(5.20%)	(3.20%)
Effective income tax rate									27.60%	93.50%	14.40%