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Schedule for Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 25, 2021 | Dec. 26, 2020
Income Tax Disclosure [Line Items] |  |
Gross unrecognized tax benefits – beginning of the year | $ 2,585 | $ 3,014
Gross increases related to current year tax positions | 782 | 349
Gross increases related to prior year tax positions | 315 | 232
Gross decreases related to prior year tax positions | (17) | 0
Lapse of statute of limitations | (820) | (1,010)
Gross unrecognized tax benefits – end of the year | $ 2,845 | $ 2,585

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