Derivative Instruments Recorded on Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 14,887	$ 16,253
Commodity Contract \| Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	14,867	12,898
Commodity Contract \| Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 20	$ 3,355

Fair value of all liability derivatives designated as cash flow hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Name:	us-gaap_CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant