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Retirement Benefits (Tables)

6 Months Ended

Jun. 27, 2025

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost for retirement benefit plans were as follows (in thousands):

			Three Months Ended												Six Months Ended
			June 27, 2025						June 28, 2024						June 27, 2025						June 28, 2024
Pension Benefits
Service cost			$	1,039					$	1,253					$	2,292					$	2,720
Interest cost			2,568						2,204						4,711						4,634
Expected return on assets			(2,904)						(2,623)						(5,807)						(5,067)
Amortization and other			202						707						366						1,643
Net periodic benefit cost			$	905					$	1,541					$	1,562					$	3,930
Postretirement Medical
Service cost			$	78					$	67					$	153					$	167
Interest cost			369						256						569						556
Amortization			(136)						(28)						(136)						(53)
Net periodic benefit cost			$	311					$	295					$	586					$	670

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-SubTopic 20
-Subparagraph (h)
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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