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Employee Benefit Plans - (Change in Benefit Obligation and Plan Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 27, 2023 | Dec. 28, 2022 | Dec. 29, 2021
Change in Benefit Obligation: |  |  |
Benefit obligation at beginning of year | $ 1,606 | $ 2,219 |
Interest cost | 53 | 36 | $ 26
Actuarial gain | (29) | (261) |
Benefits paid | (131) | (151) |
Settlements | (421) | (237) |
Benefit obligation at end of year | 1,078 | 1,606 | 2,219
Accumulated benefit obligation | 1,078 | 1,606 |
Change in Plan Assets: |  |  |
Fair value of plan assets at beginning of year | 0 | 0 |
Employer contributions | 552 | 388 |
Benefits paid | (131) | (151) |
Settlements | (421) | (237) |
Fair value of plan assets at end of year | 0 | 0 | $ 0
Unfunded status at end of year | (1,078) | (1,606) |
Amounts recognized on the balance sheet: |  |  |
Other current liabilities | (582) | (972) |
Other noncurrent liabilities | (496) | (634) |
Net amount recognized | (1,078) | (1,606) |
Amounts in accumulated other comprehensive loss not yet reflected in net period benefit cost: |  |  |
Unamortized actuarial losses, net | (449) | (516) |
Other changes in plan assets and benefit obligations recognized in accumulated other comprehensive loss, net: |  |  |
Benefit obligation actuarial gain (loss) | (98) | 261 |
Amortization of net loss | 56 | 123 |
Settlement loss recognized | 35 | 74 |
Plan closure loss | 74 | 0 |
Other comprehensive income | $ 67 | $ 458 |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration