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Schedule for Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 29, 2018 | Dec. 30, 2017
Income Tax Disclosure [Line Items] |  |
Gross unrecognized tax benefits - beginning of the year | $ 4,812 | $ 2,635
Gross increases related to current year tax positions | 714 | 645
Gross increases related to prior year tax positions | 370 | 2,189
Gross decreases related to prior year tax positions | (1,575) | (75)
Settlements | (159) | (100)
Lapse of statute of limitations | (643) | (482)
Gross unrecognized tax benefits - end of the year | $ 3,519 | $ 4,812

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