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Income Taxes - Additional Information (Detail) - USD ($) | 9 Months Ended
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Sep. 28, 2019 | Sep. 29, 2018
Income Taxes [Line Items] |  |
Corporate income tax rate | 21.00% | 21.00%
Excess tax benefit from stock-based awards | $ 2,968,000 | $ 2,046,000
Estimated annual effective income tax rate | 24.20% | 24.50%
Effective income tax rate | 22.80% | 23.10%

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