The tax year(s) being audited in connection with the income tax examination for other entities.

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Increase decrease interest and penalties.

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Liability for uncertain tax positions, total.

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Maximum decrease in income tax expense due to release in reserves.

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Minimum decrease in income tax expense due to release in reserves.

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Tax years open to examination by Internal Revenue Service

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Unrecognized tax benefit shown as a reduction to noncurrent deferred tax assets as a result of net operating loss carryforward, a similar tax loss, or a tax credit carryforward.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

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The amount the liability recorded for the income tax examination increased or decreased in the current year/accounting period.

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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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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Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Taxes (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Dec. 31, 2018
Income Tax Contingency [Line Items]
Income tax expense at U.S. federal statutory corporate tax rate	21.00%	21.00%	21.00%	21.00%
Decrease in effective tax rate	7.00%	7.00%	7.00%	7.00%
Decrease in effective tax rate for difference between deduction for tax purposes and compensation cost recognized from stock option exercises	2.00%	1.00%	4.00%	5.00%
Increase in reserves for income taxes, net of deferred tax benefit	$ 952		$ 952
Interest and penalties included in reserve			155
Liability for uncertain tax positions	9,119		9,119
Reserve for income taxes classified as a noncurrent iability	8,091		8,091		$ 7,106
Reserve for income taxes classified an noncurrent deferred tax assets	1,028		1,028
Interest and penalties, gross	$ 1,019		1,019
Minimum decrease in income tax expense due to release in reserves			1,250
Maximum decrease in income tax expense due to release in reserves			$ 1,350
Tax years open to examination by Internal Revenue Service			2015 through 2018
Tax years open to examination by various taxing authorities for other entities			2014 through 2018
Foreign Tax Authority \| Revenue Commissioners, Ireland
Income Tax Contingency [Line Items]
Income tax expense at U.S. federal statutory corporate tax rate			12.50%
Foreign Tax Authority \| State Administration of Taxation, China
Income Tax Contingency [Line Items]
Income tax expense at U.S. federal statutory corporate tax rate			25.00%
Domestic Tax Authority
Income Tax Contingency [Line Items]
Income tax expense at U.S. federal statutory corporate tax rate			21.00%