Benefit Plans - Benefit Plan Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Change in fair value of plan assets:
Beginning balance	$ 78,480
Surplus assets		$ 12,400
Ending balance	79,478	78,480
Incremental benefit payments		100,000
Actuarial net loss	$ 800
Payable maximum period to be considered current	12 months
Ultimate health care cost trend rate	4.10%
Minimum
Change in fair value of plan assets:
Annual assumed rate of increase in the per capita cost of covered benefits	4.50%
Maximum
Change in fair value of plan assets:
Annual assumed rate of increase in the per capita cost of covered benefits	6.40%
Pension Benefits
Change in benefit obligation [Roll Forward]
Obligation at beginning of year	$ 90,809	182,164
Service cost	0	0
Interest cost	1,272	3,260	$ 5,972
Actuarial (gain) loss	(4,062)	10,790
Plan amendments	0	0
Benefit payments	(2,832)	(9,214)
Curtailment	0	0
Settlement	0	(99,585)
Foreign currency translation adjustment	(904)	3,394
Obligation at end of year	84,283	90,809	182,164
Change in fair value of plan assets:
Beginning balance	78,480	183,486
Actual return on plan assets	4,791	13,313
Employer contributions	0	0
Benefit payments	(2,832)	(9,214)
Settlement	0	(99,585)
Surplus assets	0	12,386
Foreign currency translation adjustment	(961)	2,866
Ending balance	79,478	78,480	183,486
Funded (underfunded) status at end of year	(4,805)	(12,329)
Plan termination, termination costs		17,800
Plan termination, federal excise tax		6,200
Other Benefits
Change in benefit obligation [Roll Forward]
Obligation at beginning of year	12,782	12,653
Service cost	258	212	260
Interest cost	281	430	609
Actuarial (gain) loss	(812)	422
Plan amendments	0	(26)
Benefit payments	(634)	(716)
Curtailment	0	(183)
Settlement	0	0
Foreign currency translation adjustment	(50)	(10)
Obligation at end of year	11,825	12,782	12,653
Change in fair value of plan assets:
Beginning balance	0	0
Actual return on plan assets	0	0
Employer contributions	634	716
Benefit payments	(634)	(716)
Settlement	0	0
Surplus assets	0	0
Foreign currency translation adjustment	0	0
Ending balance	0	0	$ 0
Funded (underfunded) status at end of year	$ (11,825)	$ (12,782)
Foreign Plan | Pension Benefits
Change in fair value of plan assets:
Percent of above benefit obligation on company sponsored UK pension plan	100.00%	100.00%
Percent above plan assets on company sponsored UK pension plan	100.00%	100.00%