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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fiscal Year (Details)	12 Months Ended
	Dec. 28, 2016	Dec. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Fiscal period duration	364 days	364 days	371 days

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- Definition

Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

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