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Summary of Company's Balance Sheet Related Pension and Other Postretirement Benefit Plan (Detail) - USD ($)
$ in Thousands
Jan. 02, 2021
Dec. 28, 2019
Pension And Other Postretirement Benefit Expense [Abstract]    
Current benefit liability $ 874 $ 29,380
Noncurrent benefit liability 10,049 14,328
AOCI, net of tax $ (6,648) $ (107,678)