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Employee Benefit Plans - Additional Information (Details) | 12 Months Ended
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Sep. 27, 2025 USD ($) Member | Sep. 28, 2024 USD ($) | Sep. 30, 2023 USD ($)
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Settlement charge | $ 528,000 | $ 638,000 | $ 0
Estimated obligation due to withdrawal multi employer pension plans | 18,559,000 | 20,026,000 |
Health and Welfare Benefits and Defined Annuity Plans [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Contributions | $ 674,000 | 892,000 | 881,000
United States [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Percentage threshold of the greater of projected benefit obligation and market-related value plan assets as unrecognized actuarial gains and losses (in hundredths) | 10.00% |  |
Pension Benefits [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Contributions for defined benefit pension plan | $ 4,000,000 | 4,000,000 | 4,000,000
Number of members on the Benefits Committee | Member | 5 |  |
Defined benefit plan expected future benefit payments | $ 4,000,000 |  |
Pension settlement payments to either terminated or retired individuals | 3,441,000 | 3,917,000 | 2,639,000
Settlement threshold amount | 2,577,000 | 3,129,000 | 3,306,000
Settlement charge | 528,000 | 638,000 | 0
Retiree Health and Life Benefits [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Contributions for defined benefit pension plan | 277,000 | 322,000 |
Pension settlement payments to either terminated or retired individuals | 0 | 0 |
Settlement charge | $ 0 | 0 | 0
Percentage of sensitivity increase or decrease of assumed health care cost trend rates (in hundredths) | 1.00% |  |
Maximum [Member] | Pension Benefits [Member] | Fixed income securities [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Allocation percentage of plan assets (in hundredths) | 90.00% |  |
Maximum [Member] | Pension Benefits [Member] | Equity securities [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Allocation percentage of plan assets (in hundredths) | 20.00% |  |
Minimum [Member] | Pension Benefits [Member] | Fixed income securities [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Allocation percentage of plan assets (in hundredths) | 80.00% |  |
Minimum [Member] | Pension Benefits [Member] | Equity securities [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Allocation percentage of plan assets (in hundredths) | 10.00% |  |
Retiree Health and Life Benefits [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Employer contribution match amount | $ 0.50 |  |
Contribution costs to the 401(k) Plan | $ 4,263,000 | $ 4,280,000 | $ 4,493,000
Retiree Health and Life Benefits [Member] | Maximum [Member] |  |  |
Deferred Compensation Arrangement With Individual Postretirement Benefits [Line Items] |  |  |
Eligible compensation match percentage | 6.00% |  |

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- Definition Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (m) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(10) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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