Acquisitions and Divestitures - Schedule of Unaudited Pro Forma Income From Operations (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Business Combinations [Abstract]
Income from operations as reported	$ 47,313	$ 54,736	$ 60,921	$ 67,137
Pro forma adjustments (unaudited)	912	14,217	9,821	29,227
Income from operations pro forma (unaudited)	$ 48,225	$ 68,953	$ 70,742	$ 96,364

Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration