Benefit Plans - Benefit Plan Related Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 06, 2020	Dec. 31, 2022	Jan. 01, 2022	Dec. 26, 2020
Change in benefit obligation:
Benefit obligation at beginning of year		$ 4,100
Service cost		3,072	$ 2,785	$ 2,462
Interest cost		2,529	1,761	2,173
Net actuarial gain	$ (13,400)
Benefits paid from the plan assets		(1,900)
Benefit obligation at end of year		4,000	4,100
Change in plan assets at fair value:
Fair value of plan assets at beginning of year		48,325
Fair value of plan assets at end of year		35,433	48,325
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent assets		262	40
Current benefit liability		(1,318)	(1,248)
Noncurrent benefit liability		(28,037)	(37,037)
Net liability recognized		(29,093)	(38,245)
Pension Plan
Change in benefit obligation:
Benefit obligation at beginning of year		86,570	148,992
Service cost		3,072	2,785
Interest cost		2,529	1,761
Net actuarial gain		(19,327)	(11,016)
Benefits paid from the plan assets		(1,474)	(3,121)
Benefits paid directly by the Company		(1,853)	(2,692)
Settlements		(1,565)	(48,927)
Acquisitions		3,812	1,797
Effect of exchange rate movements		(5,839)	(3,218)
Plan amendment and other		(1,399)	209
Benefit obligation at end of year		64,526	86,570	148,992
Change in plan assets at fair value:
Fair value of plan assets at beginning of year		48,325	100,478
Actual loss on plan assets		(9,217)	(2,824)
Employer contributions		2,288	2,150
Benefits paid from the plan assets		(1,474)	(3,121)
Settlements		0	(47,111)
Effect of exchange rate movements		(4,489)	(1,247)
Fair value of plan assets at end of year		35,433	48,325	$ 100,478
Net amount unfunded status		$ (29,093)	$ (38,245)