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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate	23.60%	21.90%	24.20%	6.20%
Effective state income tax expenses			$ 1,766
Tax expense related to global intangible low taxed income			1,798
Reversal of tax reserves			1,375
Tax expense (benefit) related to foreign derived intangible income			(1,284)
Tax shortfall on share-based awards				$ (22,155)
Benefit on closure of subsidiary			$ (746)	$ (1,859)

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- Definition

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the disposition of a business not qualifying as a discontinued operation.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).

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