Income Taxes - Additional Information (Detail) - USD ($)		3 Months Ended
Dec. 22, 2017	Apr. 04, 2020	Mar. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense		$ 4,138,000	$ 2,285,000
Effective tax rates	25.00%	21.00%	21.70%
Income tax expense, discrete item		$ 767,000	$ 422,000
Effective tax rates, excluding discrete item		24.80%	25.70%
Payment of estimated federal and state income taxes		$ 0

Effective Income Tax Rate Continuing Operations Excluding Effect Of Temporary Differences

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Income tax expense discrete item.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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