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Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance | $ 956,967 | $ 735,636 | $ 460,317
Deferred pension and other post-retirement benefit costs |  | 1,611 | (442)
Amortization of Deferred benefit costs | 90 | (219) | (77)
Currency translation adjustment | (32) | 25 | 47
Balance | 983,409 | 956,967 | 735,636
AOCI Attributable to Parent |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance | (252) | (1,669) | (1,197)
Currency translation adjustment | (32) | 25 | 47
Balance | $ (194) | $ (252) | $ (1,669)

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