Guarantor Financial Information (Condensed Consolidating Statements of Comprehensive Income) (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 29, 2014	Mar. 30, 2013
Net income/ (loss)	$ (51,006)	$ 32,405
Other comprehensive income, net of tax:
Foreign currency translation	20,615	0
Pension adjustments	320	805
Total other comprehensive income, net of tax	19,224	1,902
Total comprehensive income / (loss)	(31,782)	34,307
Issuer [Member]
Net income/ (loss)	(51,006)	32,405
Other comprehensive income, net of tax:
Foreign currency translation	0
Pension adjustments	320	805
Total other comprehensive income, net of tax	(1,391)	1,902
Total comprehensive income / (loss)	(52,397)	34,307
Guarantors [Member]
Net income/ (loss)	34,630	30,435
Other comprehensive income, net of tax:
Foreign currency translation	0
Pension adjustments	0	0
Total other comprehensive income, net of tax	0	0
Total comprehensive income / (loss)	34,630	30,435
Non-guarantors [Member]
Net income/ (loss)	(23,269)	(717)
Other comprehensive income, net of tax:
Foreign currency translation	20,615
Pension adjustments	0	0
Total other comprehensive income, net of tax	20,615	0
Total comprehensive income / (loss)	(2,654)	(717)
Eliminations [Member]
Net income/ (loss)	(11,361)	(29,718)
Other comprehensive income, net of tax:
Foreign currency translation	0
Pension adjustments	0	0
Total other comprehensive income, net of tax	0	0
Total comprehensive income / (loss)	(11,361)	(29,718)
Natural Gas Swap [Member]
Other comprehensive income, net of tax:
Derivative adjustments	(113)	148
Natural Gas Swap [Member] \| Issuer [Member]
Other comprehensive income, net of tax:
Derivative adjustments	(113)	148
Natural Gas Swap [Member] \| Guarantors [Member]
Other comprehensive income, net of tax:
Derivative adjustments	0	0
Natural Gas Swap [Member] \| Non-guarantors [Member]
Other comprehensive income, net of tax:
Derivative adjustments	0	0
Natural Gas Swap [Member] \| Eliminations [Member]
Other comprehensive income, net of tax:
Derivative adjustments	0	0
Corn Option [Member]
Other comprehensive income, net of tax:
Derivative adjustments	(1,598)	949
Corn Option [Member] \| Issuer [Member]
Other comprehensive income, net of tax:
Derivative adjustments	(1,598)	949
Corn Option [Member] \| Guarantors [Member]
Other comprehensive income, net of tax:
Derivative adjustments	0	0
Corn Option [Member] \| Non-guarantors [Member]
Other comprehensive income, net of tax:
Derivative adjustments	0	0
Corn Option [Member] \| Eliminations [Member]
Other comprehensive income, net of tax:
Derivative adjustments	$ 0	$ 0

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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