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Associate Retirement Plans - Schedule of Benefit Obligations, Pension & Other Long-Term Liabilities (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Jan. 01, 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 Interest Expense Interest Expense
Retiree Medical Plan [Member]      
Projected/Accumulated benefit obligation:      
Balance at beginning of year $ 2,412 $ 11,031  
Service cost   76 $ 187
Interest cost 85 185 226
Actuarial (gain) loss 23 30  
Plan amendment   (6,614)  
Benefits paid (1,284) (2,296)  
Balance at end of year 1,236 2,412 $ 11,031
Fair value of plan assets:      
Company contributions 1,284 2,296  
Benefits paid (1,284) (2,296)  
Funded (unfunded) status (1,236) (2,412)  
Components of net amount recognized in financial position:      
Current liabilities (1,236) (1,270)  
Noncurrent liabilities   (1,142)  
Net asset (liability) (1,236) (2,412)  
Amounts recognized in AOCI:      
Net actuarial loss 217 743  
Prior service credit (1,653) (4,960)  
Accumulated other comprehensive income $ (1,436) $ (4,217)  
Weighted average assumptions at measurement date:      
Discount rate 5.65% 5.34%