Acquisitions and Divestitures - Schedule of Unaudited Pro Forma Income From Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Business Combinations [Abstract]
Income from operations as reported	$ 96,179	$ 127,859	$ 98,144
Pro forma adjustments (unaudited)	5,391	76,906
Income from operations pro forma (unaudited)	$ 101,570	$ 204,765

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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Balance Type:	credit
Period Type:	duration