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Accumulated Other Comprehensive Income or Loss - Schedule Of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance at beginning of the year, net of tax $ 778,182 $ 766,068 $ 782,869
Other comprehensive income (loss), net of tax 541 (2,183) 4,434
Balance at end of the year, net of tax 743,490 778,182 766,068
Total accumulated other comprehensive income 1,337 796 2,979
Interest rate swap      
Accumulated Other Comprehensive Income Loss [Line Items]      
Other comprehensive income before reclassifications 4,471 1,419 0
Income tax expense (1,051) (332) 0
Other comprehensive income, net of tax, before reclassifications 3,420 1,087 0
Reclassification into net earnings [1] (2,311) (1,832) 0
Income tax benefit [2] 544 429 0
Amounts reclassified out of AOCI, net of tax (1,767) (1,403) 0
Other comprehensive income (loss), net of tax 1,653 (316) 0
Total accumulated other comprehensive income 1,337 (316)  
Postretirement benefit plans      
Accumulated Other Comprehensive Income Loss [Line Items]      
Other comprehensive income before reclassifications 0 203 6,576
Income tax expense 0 (51) (1,614)
Other comprehensive income, net of tax, before reclassifications 0 152 4,962
Reclassification into net earnings [3] (1,462) (2,677) (701)
Income tax benefit [2] 350 658 173
Amounts reclassified out of AOCI, net of tax (1,112) (2,019) (528)
Other comprehensive income (loss), net of tax (1,112) (1,867) 4,434
Accumulated Other Comprehensive Income (Loss) [Member]      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance at beginning of the year, net of tax 796 2,979 (1,455)
Other comprehensive income (loss), net of tax 541 (2,183) 4,434
Balance at end of the year, net of tax 1,337 796 2,979
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 (316) 0 0
Balance at end of the year, net of tax 1,337 (316) 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 1,112 2,979 (1,455)
Balance at end of the year, net of tax $ 0 $ 1,112 $ 2,979
[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 $0.1 million, $0.4 million and $0.7 million in 2024, 2023 and 2022, respectively.