Employee Benefit Plans (Liability For Post Retirement Benefits) (Details) - USD ($) $ in Thousands	Dec. 25, 2021	Dec. 26, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Accrued expenses	$ 19	$ 17
Other long-term liabilities	377	373
Total liability	$ 396	$ 390

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123453770&loc=d3e1703-114919

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant