Net Fair Value of Commodity Price Risk (Detail) $ in Thousands	Oct. 10, 2015 USD ($)
Derivatives, Fair Value [Line Items]
Assets	$ 665
Liabilities	(11,730)
Net Fair Value	(11,065)
Level 1
Derivatives, Fair Value [Line Items]
Assets	665
Liabilities	(8,670)
Net Fair Value	(8,005)
Level 2
Derivatives, Fair Value [Line Items]
Liabilities	(3,060)
Net Fair Value	(3,060)
Other LongTerm Assets
Derivatives, Fair Value [Line Items]
Assets	665
Other LongTerm Assets \| Level 1
Derivatives, Fair Value [Line Items]
Assets	665
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	(11,335)
Other Current Liabilities \| Level 1
Derivatives, Fair Value [Line Items]
Liabilities	(8,566)
Other Current Liabilities \| Level 2
Derivatives, Fair Value [Line Items]
Liabilities	(2,769)
Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Liabilities	(395)
Other LongTerm Liabilities \| Level 1
Derivatives, Fair Value [Line Items]
Liabilities	(104)
Other LongTerm Liabilities \| Level 2
Derivatives, Fair Value [Line Items]
Liabilities	$ (291)

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Fair value as of the balance sheet date of all price risk derivative assets designated as cash flow hedging instruments.

+ References

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

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Fair value as of the balance sheet date of all price risk derivatives designated as cash flow hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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