Changes to Goodwill by Acquisition (Detail) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2016	Jan. 03, 2015
Goodwill [Line Items]
Change in goodwill related to an acquisition	$ 181,966	$ 3,180
Spare Parts and Final Fair Value Adjustments
Goodwill [Line Items]
Change in goodwill related to an acquisition		(3,503)
Property, Plant and Equipment Final Fair Value Adjustments
Goodwill [Line Items]
Change in goodwill related to an acquisition		$ 6,683

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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