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Associate Retirement Plans - Schedule of Benefit Obligations, Pension & Other Long-Term Liabilities (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Projected/Accumulated benefit obligation:      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Expense, Nonoperating Interest Expense, Nonoperating Interest Expense, Nonoperating
Retiree Medical Plan [Member]      
Projected/Accumulated benefit obligation:      
Balance at beginning of year $ 1,236 $ 2,412  
Service cost 0 0 $ 76
Interest cost 17 85 185
Actuarial loss 12 23  
Benefits paid (1,265) (1,284)  
Balance at end of year 0 1,236 2,412
Fair value of plan assets:      
Balance at beginning of year 0 0  
Company contributions 1,265 1,284  
Benefits paid (1,265) (1,284)  
Balance at end of year 0 0 $ 0
Funded (unfunded) status 0 (1,236)  
Components of net amount recognized in financial position:      
Current liabilities 0 (1,236)  
Net asset (liability) 0 (1,236)  
Amounts recognized in AOCI:      
Net actuarial loss 0 217  
Prior service credit 0 (1,653)  
Accumulated other comprehensive income $ 0 $ (1,436)  
Weighted average assumptions at measurement date:      
Discount rate   5.65%