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Fair Value Measurements - Schedule of Recurring Level 3 Fair Value Measurements of Contingent Consideration Include Unobservable Inputs (Detail) - Fair Value Measurements Recurring [Member] - Significant unobservable inputs (Level 3) [Member]	9 Months Ended
	Oct. 06, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Projected year(s) of payments	2019
Measurement Input, Discount Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Fair value measurement, unobservable input	11.80
Minimum [Member] | Measurement Input, Default Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Fair value measurement, unobservable input	0
Maximum [Member] | Measurement Input, Default Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Fair value measurement, unobservable input	100

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+ References

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Value of input used to measure alternative investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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