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Derivatives (Fair Value) (Details) - USD ($) $ in Thousands | Jul. 01, 2017 | Dec. 31, 2016
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives Fair Value | $ 2,645 | $ 13,325
Liability Derivatives Fair Value | 6,961 | 730
Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives Fair Value | 1,033 | 4,235
Liability Derivatives Fair Value | 1,071 | 0
Designated as Hedging Instrument [Member] | Corn Option [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives Fair Value | 1,033 | 4,235
Designated as Hedging Instrument [Member] | Corn Option [Member] | Accrued Expenses [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives Fair Value | 447 | 0
Designated as Hedging Instrument [Member] | Corn Option [Member] | Other Noncurrent Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives Fair Value | 624 | 0
Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives Fair Value | 1,612 | 9,090
Liability Derivatives Fair Value | 5,890 | 730
Not Designated as Hedging Instrument [Member] | Corn Option [Member] | Accrued Expenses [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives Fair Value | 119 | 122
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives Fair Value | 1,468 | 8,939
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Accrued Expenses [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives Fair Value | 5,771 | 608
Not Designated as Hedging Instrument [Member] | Corn options and futures [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives Fair Value | $ 144 | $ 151

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