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Supplemental Disclosure of Cash Flow Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 29, 2017 | Dec. 30, 2016 | Jan. 01, 2016
Cash paid during period: |  |  |
Income taxes | $ 25,849 | $ 22,280 | $ 24,651
Non-cash investing and financing activities: |  |  |
Unrealized loss on investments | (90) | (81) | (79)
Vested stock unit awards granted to settle accrued bonus | 6,910 | 6,334 | 6,169
Accrual for capital expenditures | $ 148 | $ 284 | $ 321

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