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Summary of Significant Accounting Policies and Basis of Presentation - Property And Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 30, 2017
Land Improvements [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, useful life	15 years
Minimum [Member] | Buildings and Improvements [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, useful life	15 years
Minimum [Member] | Equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Maximum [Member] | Buildings and Improvements [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Maximum [Member] | Equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, useful life	15 years

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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