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Accumulated Other Comprehensive Income or Loss - Schedule Of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 30, 2023 | Dec. 31, 2022 | Jan. 01, 2022
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Balance at beginning of the year, net of tax |  | $ 766,068 | $ 782,869 | $ 735,049
Other comprehensive (loss) income, net of tax |  | (2,183) | 4,434 | 821
Balance at end of the year, net of tax |  | 778,182 | 766,068 | 782,869
Total accumulated other comprehensive income (loss) |  | 796 | 2,979 | (1,455)
Interest rate swap |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Other comprehensive income before reclassifications |  | 1,419 | 0 | 0
Income tax expense |  | (332) | 0 | 0
Other comprehensive income (loss), net of tax, before reclassifications |  | 1,087 | 0 | 0
Reclassification into net earnings | [1] | (1,832) | 0 | 0
Income tax benefit (expense) | [2] | 429 | 0 | 0
Amounts reclassified out of AOCI, net of tax |  | (1,403) | 0 | 0
Other comprehensive (loss) income, net of tax |  | (316) | 0 | 0
Total accumulated other comprehensive income (loss) |  | (316) |  |
Postretirement benefit plans |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Other comprehensive income before reclassifications |  | 203 | 6,576 | 837
Income tax expense |  | (51) | (1,614) | (203)
Other comprehensive income (loss), net of tax, before reclassifications |  | 152 | 4,962 | 634
Reclassification into net earnings | [3] | (2,677) | (701) | 250
Income tax benefit (expense) | [2] | 658 | 173 | (63)
Amounts reclassified out of AOCI, net of tax |  | (2,019) | (528) | 187
Other comprehensive (loss) income, net of tax |  | (1,867) | 4,434 | 821
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Balance at beginning of the year, net of tax |  | 2,979 | (1,455) | (2,276)
Other comprehensive (loss) income, net of tax |  | (2,183) | 4,434 | 821
Balance at end of the year, net of tax |  | 796 | 2,979 | (1,455)
Accumulated Other Comprehensive Income (Loss) [Member] | Interest rate swap |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Balance at beginning of the year, net of tax |  | 0 | 0 | 0
Balance at end of the year, net of tax |  | (316) | 0 | 0
Accumulated Other Comprehensive Income (Loss) [Member] | Postretirement benefit plans |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Balance at beginning of the year, net of tax |  | 2,979 | (1,455) | (2,276)
Balance at end of the year, net of tax |  | $ 1,112 | $ 2,979 | $ (1,455)
[1] | Reclassified from AOCI into Interest expense.
[2] | Reclassified from AOCI into Income tax expense (benefit).
[3] | Reclassified from AOCI into Other, net, or Selling, general and administrative expense. Amounts include amortization of net actuarial loss, amortization of prior service credit, and settlement expense totaling $0.4 million and $0.7 million in 2023 and 2022, respectively. There was no settlement expense in 2021.

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