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Associate Retirement Plans - Components of Net Periodic Pension and Postretirement Benefit Cost (Income) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2022
Jan. 02, 2021
Dec. 28, 2019
Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Interest cost     $ 1,134
Expected return on plan assets     (714)
Gain on reconciliation with annuity provider   $ (1,193)  
Recognized actuarial net loss     691
Net periodic benefit (income) expense   (1,193) 1,111
Settlement expense     18,244
Total net periodic benefit (income) cost   (1,193) $ 19,355
Weighted average assumptions at measurement date:      
Discount rate     3.48%
Expected return on plan assets     2.80%
Retiree Medical Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 187 182 $ 171
Interest cost 226 303 375
Amortization of prior service cost     (92)
Recognized actuarial net loss 230 104  
Net periodic benefit (income) expense 643 589 454
Total net periodic benefit (income) cost $ 643 $ 589 $ 454
Weighted average assumptions at measurement date:      
Discount rate 2.57% 3.26% 4.41%