Income Taxes - Effective Tax Rate Differs from U.S. Federal Statutory Tax Rate (Detail)	12 Months Ended
Dec. 29, 2017	Dec. 30, 2016	Dec. 25, 2015
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory rate	35.00%	34.00%	34.00%
State income taxes, net of federal benefit	0.30%	(0.60%)	(3.10%)
Effect of foreign operations	(18.70%)	(15.30%)	(102.50%)
Change in valuation allowance	(19.80%)	30.80%	445.80%
China withholding taxes			10.30%
Acquisition related costs		1.00%	8.30%
Tax law changes	15.80%
Other	1.00%	(3.00%)	4.70%
Effective Tax Rate	13.60%	46.90%	397.50%

Effective income tax rate reconciliation acquisition related costs.

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Effective income tax rate reconciliation foreign withholding taxes rate.

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

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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 state and local income tax expense (benefit), net of federal tax expense (benefit).

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