Benefit Plans - Benefit Plan Related Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 06, 2020	Jan. 01, 2022	Dec. 26, 2020	Dec. 28, 2019
Change in benefit obligation:
Benefit obligation at beginning of year		$ 3,500
Service cost		2,785	$ 2,462	$ 2,040
Interest cost		1,761	2,173	3,169
Net actuarial (gain) loss	$ (13,400)
Benefit obligation at end of year		4,100	3,500
Change in plan assets at fair value:
Fair value of plan assets at beginning of year		100,478
Fair value of plan assets at end of year		48,325	100,478
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent assets		40	39
Current benefit liability		(1,248)	(2,751)
Noncurrent benefit liability		(37,037)	(45,802)
Net liability recognized		(38,245)	(48,514)
Pension Plan
Change in benefit obligation:
Benefit obligation at beginning of year		148,992	116,921
Service cost		2,785	2,462
Interest cost		1,761	2,173
Net actuarial (gain) loss		(11,016)	25,306
Benefits paid from the plan assets		(3,121)	(2,808)
Benefits paid directly by the Company		(2,692)	(2,302)
(Settlements) and Curtailments		(48,927)	102
Acquisitions		1,797	0
Effect of exchange rate movements		(3,218)	7,462
Plan amendment and other		209	(324)
Benefit obligation at end of year		86,570	148,992	116,921
Change in plan assets at fair value:
Fair value of plan assets at beginning of year		100,478	78,502
Actual (loss) return on plan assets		(2,824)	7,053
Employer contributions		2,150	12,918
Benefits paid from the plan assets		(3,121)	(2,808)
Settlements		(47,111)	0
Effect of exchange rate movements		(1,247)	4,813
Fair value of plan assets at end of year		48,325	100,478	$ 78,502
Net amount unfunded status		$ (38,245)	$ (48,514)