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Derivative Instruments Located on Condensed Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands | Oct. 07, 2017 | Dec. 31, 2016
--- | --- | ---
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative Assets | $ 453 | $ 1,611
Derivative Liabilities | 9,541 | 2,435
Commodity Contract | Other Current Assets |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative Assets | 277 | 1,576
Commodity Contract | Other Assets |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative Assets | 176 | 35
Commodity Contract | Other Current Accrued Labilities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative Liabilities | 9,533 | $ 2,435
Commodity Contract | Other LongTerm Liabilities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative Liabilities | $ 8 |

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- Definition Fair value of all asset 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 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Fair value of all liability 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 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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