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Reconciliation of Total Amounts of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Income Tax Disclosure [Abstract] |  |  |
Unrecognized tax benefit at beginning of fiscal year | $ 750 | $ 1,259 | $ 1,754
Lapses of statutes of limitations | (444) | (509) | (495)
Unrecognized tax benefit at end of fiscal year | $ 306 | $ 750 | $ 1,259

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