Discontinued Operations (Statement of Operations) (Details) - Discontinued Operations, Disposed of by Sale - Commercial Divestiture - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 01, 2023	Jun. 25, 2022	Jul. 01, 2023	Jun. 25, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 30	$ 2,480	$ 170	$ 7,489
Cost of sales	130	2,788	392	6,895
Gross profit	(100)	(308)	(222)	594
Selling and administrative expenses	3	222	48	1,138
Other operating income	(1)	(52)	(5)	(52)
Loss from discontinued Commercial business operations	$ (102)	$ (478)	$ (265)	$ (492)

Disposal Group, Including Discontinued Operation, Other Income (Expense)

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- Definition

Disposal Group, Including Discontinued Operation, Selling and Administrative Expense

+ References

No definition available.

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- Definition

Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-7

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-5B

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Amount of gross profit attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-5B

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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