Income Taxes - Effective Tax Rate Differs from U.S. Federal Statutory Tax Rate (Detail)	12 Months Ended
Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory rate	21.00%	21.00%	35.00%
State income taxes, net of federal benefit	(99.50%)	2.00%	0.30%
Effect of foreign operations	(85.30%)		(18.70%)
Change in valuation allowance	552.70%	(0.10%)	(19.80%)
Foreign income inclusions	34.50%	2.10%
Adjustment for changes in tax law		3.60%	15.80%
Other	(7.50%)	0.70%	1.00%
Effective Tax Rate	415.90%	29.30%	13.60%

Effective income tax rate reconciliation foreign income inclusions.

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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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