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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019	Dec. 28, 2019
Income Taxes [Line Items]
Accrued interest and penalties	$ 0.2		$ 0.2		$ 0.1
Unrecognized income tax benefits	$ 0.8		$ 0.8		$ 0.8
Effective Income Tax Rate Reconciliation, Percent, Total	23.40%	26.90%	21.40%	24.10%
State and Local Jurisdiction | Minimum
Income Taxes [Line Items]
Income tax return examination period			3 years
State and Local Jurisdiction | Maximum
Income Taxes [Line Items]
Income tax return examination period			4 years

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Income Taxes [Line Items]

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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