Benefit Plans - Benefit Plan Related Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Change in benefit obligation:
Benefit obligation at beginning of year	$ 4,400
Service cost	3,020	$ 3,060	$ 2,774
Interest cost	4,013	3,873	3,795
Benefits paid from the plan assets	(2,300)
Benefit obligation at end of year	5,900	4,400
Change in plan assets at fair value:
Fair value of plan assets at beginning of year	39,338
Fair value of plan assets at end of year	41,613	39,338
Amounts recognized in the Consolidated Balance Sheets consist of:
Non-current assets	241	6
Current benefit liability	(1,680)	(1,514)
Non-current benefit liability	(38,733)	(29,836)
Net liability recognized	(40,172)	(31,344)
Pension Plan
Change in benefit obligation:
Benefit obligation at beginning of year	70,682	73,521
Service cost	3,020	3,060
Interest cost	4,013	3,873
Net actuarial loss	1,471	501
Benefits paid from the plan assets	(1,984)	(2,037)
Benefits paid directly by the Company	(2,349)	(2,042)
Settlements	(868)	(1,248)
Acquisitions	1,725	0
Effect of exchange rate movements	6,075	(4,946)
Benefit obligation at end of year	81,785	70,682	73,521
Change in plan assets at fair value:
Fair value of plan assets at beginning of year	39,338	37,696
Actual gain (loss) on plan assets	983	(529)
Employer contributions	1,415	5,376
Benefits paid from the plan assets	(1,984)	(2,037)
Settlements	(509)	0
Effect of exchange rate movements	2,370	(1,168)
Fair value of plan assets at end of year	41,613	39,338	$ 37,696
Net amount unfunded status	$ (40,172)	$ (31,344)