Acquisitions and Divestitures - Schedule of Consolidated Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
Business Acquisition [Line Items]
Net sales	$ 865,702	$ 625,456
Income from operations	13,608	12,401
2017 Expansion Transactions [Member]
Business Acquisition [Line Items]
Net sales	26,246
Income from operations	96
2016 Expansion Transactions [Member]
Business Acquisition [Line Items]
Net sales	238,660	35,311
Income from operations	4,354	1,206
2016 and 2017 Acquisitions [Member]
Business Acquisition [Line Items]
Net sales	264,906	35,311
Income from operations	$ 4,450	$ 1,206