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Summary of Company's Balance Sheet Related Pension and Other Postretirement Benefit Plan (Detail) - USD ($)
$ in Thousands
Dec. 28, 2019
Dec. 29, 2018
Pension And Other Postretirement Benefit Expense [Abstract]    
Current benefit liability $ 29,380 $ 1,283
Noncurrent benefit liability 14,328 39,149
AOCI, net of tax $ 107,678 $ 105,036