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Income Taxes - Reconciliation of U.S. Federal Statutory Tax Rate to Company's Effective Tax Rate (Detail)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Statutory regular federal income tax rate	35.00%	35.00%	35.00%
State provision, net of federal benefit	(0.30%)	1.40%	0.70%
Nondeductible items	1.80%	0.80%	1.70%
Foreign income taxed at different rates	(3.40%)	(5.60%)	(6.30%)
Tax credits	(2.00%)	(0.50%)	(1.70%)
Change in federal valuation allowance	0.00%	0.00%	0.40%
Impact of 2017 Tax Act	18.50%	0.00%	0.00%
Withholding taxes on undistributed foreign earnings	3.30%	0.00%	0.00%
Excess stock based compensation	(18.90%)	(3.00%)	(0.00%)
Other	0.00%	0.00%	(0.20%)
Total	34.00%	28.10%	30.00%

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Effective Income Tax Rate Reconciliation, Impact of 2017 Tax Act

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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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Percentage 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 changes in the valuation allowance for deferred tax assets.

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Percentage 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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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