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Interest Income for Distributor Notes Receivable (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 07, 2017	Oct. 08, 2016	Oct. 07, 2017	Oct. 08, 2016
Fair Value Disclosures [Abstract]
Interest income	$ 5,464	$ 4,757	$ 17,199	$ 15,686

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- References

No definition available.

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- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(b))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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