Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Income Tax Contingency [Line Items]
Effective income tax rate	(6.30%)	(44.10%)	(1.70%)	(13.50%)
Federal statutory income tax rate		21.00%	21.00%
Unrecognized Tax Benefits	$ 17,300		$ 17,300
Unrecognized tax benefits that would impact the provision for income taxes	16,000		16,000
Interest and possible penalties related to uncertain tax positions	$ 25		25
Unrecognized Tax Benefit Decrease			700
One foreign subsidiary
Income Tax Contingency [Line Items]
One-time benefit due to valuation allowance release			$ 800

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

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

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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 increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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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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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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