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Changes in Accumulated Other Comprehensive Loss (Parenthetical) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |
Deferred pension and other post-retirement benefit costs, taxes |  | $ 502 | $ 150
Amortization of Deferred benefit costs, tax | $ 20 | $ 35 | $ 26

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