Fair Values of Financial Instruments - Summary of Reconciliation of Acquisition Related Contingent Consideration (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Fair value adjustment - (income) expense	$ 3,576	$ 1,077	$ 0
Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Opening balance	46,850	0
Increase due to acquisitions	109,784	46,200
Decrease due to measurement period adjustments	(18,396)	0
Payment/accruals	(5,244)	(427)
Fair value adjustment - (income) expense	3,576	1,077
Ending balance	$ 136,570	$ 46,850	$ 0