Acquisitions and Divestitures - Schedule of Unaudited Pro Forma Income From Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2017	Apr. 03, 2016
Business Combinations [Abstract]
Income from operations as reported	$ 13,608	$ 12,401
Pro forma adjustments (unaudited)	5,810	10,427
Income from operations pro forma (unaudited)	$ 19,418	$ 22,828

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=65885119&loc=d3e1392-128463

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration