Shareholders' Equity - (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 24, 2020	Dec. 28, 2022	Dec. 29, 2021	Dec. 30, 2020
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Balance as of beginning period		$ (65,265)	$ (130,446)	$ (138,064)
Settlement loss recognized		(74)	0
Income tax (expense) benefit		(3,643)	(2,642)	9,432
Balance as of end of period		(37,116)	(65,265)	(130,446)
Effective Interest Rate Swaps
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Expect reclassification within next twelve months		3,300
Pensions
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Balance as of beginning period		(900)	(978)	(781)
Benefit obligation actuarial gain (loss)		261	(46)	(448)
Settlement loss recognized		74		95
Income tax (expense) benefit		(113)	(35)	67
Balance as of end of period		(555)	(900)	(978)
Amortization of net loss
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Reclassification		123	159	89
Derivatives
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Balance as of beginning period		(53,570)	(59,427)	(33,179)
Reclassification		1,310	4,023	3,160
Changes in the fair value of cash flow derivatives		13,619	4,275	(46,910)
Income tax (expense) benefit		(3,530)	(2,607)	9,365
Balance as of end of period		(42,142)	(53,570)	(59,427)
Derivatives | Dedesignated Interest Rate Swaps Member
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Balance as of end of period		64,200
Derivatives
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Reclassification	$ 7,400			7,354
Derivatives | Dedesignated Interest Rate Swaps Member
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Reclassification				7,400
Derivatives
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Reclassification		29	166	783
Derivatives | Dedesignated Interest Rate Swaps Member
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Reclassification		100	200
Expect reclassification within next twelve months		300
Accumulated Other Comprehensive Loss
AOCI Attributable To Parent, Net Of Tax [Roll Forward]
Balance as of beginning period		(54,470)	(60,405)	(33,960)
Balance as of end of period		$ (42,697)	$ (54,470)	$ (60,405)