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Amounts Reclassified Out of Accumulated Other Comprehensive Income - Reclassification Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance, beginning of period |  | $ (6,147) |
Other comprehensive (loss) income |  | (116) | $ 169
Balance, end of period |  | (6,263) |
Pension Benefits [Member] |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance, beginning of period |  | (9,809) | (15,190)
Reclassifications to earnings | [1] | 62 | 425
Other comprehensive (loss) income |  | 62 | 425
Balance, end of period |  | (9,747) | (14,765)
Postretirement Benefits [Member] |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance, beginning of period |  | 3,662 | 4,523
Amortization of net gain and prior service credits | [1] | (178) | (256)
Other comprehensive (loss) income |  | (178) | (256)
Balance, end of period |  | 3,484 | 4,267
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance, beginning of period |  | (6,147) | (10,667)
Reclassifications to earnings |  | (116) | 169
Other comprehensive (loss) income |  | (116) | 169
Balance, end of period |  | $ (6,263) | $ (10,498)
[1] | These amounts are included in the computation of net periodic benefit cost. See Note 15, “Pension Plans and Other Postretirement Benefits.”

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