Other Comprehensive Income (Schedule of OCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 04, 2015	Mar. 29, 2014
Before-Tax Amount:
Amortization of prior service cost	$ (20)	$ 4
Amortization of actuarial loss	1,285	519
Total defined benefit pension plans	1,265	523
Loss activity recognized in other comprehensive loss	300	1,100
Other Comprehensive income (loss)	(97,315)	18,342
Tax (Expense) or Benefit:
Amortization of prior service cost	10	(2)
Amortization of actuarial loss	(506)	(201)
Total defined benefit pension plans	(496)	(203)
Loss activity recognized in other comprehensive loss	100	(400)
Other Comprehensive income (loss)	(520)	882
Net-of-Tax Amount:
Amortization of prior service cost	(10)	2
Amortization of actuarial loss	779	318
Total defined benefit pension plans	769	320
Foreign currency translation	(98,642)	20,615
Net current-period other comprehensive income	(97,835)	19,224
Natural Gas Swap [Member]
Before-Tax Amount:
Loss reclassified to net income	0	(357)
Loss activity recognized in other comprehensive loss	0	172
Total swap derivatives	0	(185)
Tax (Expense) or Benefit:
Loss reclassified to net income	0	139
Loss activity recognized in other comprehensive loss	0	(67)
Total swap derivatives	0	72
Net-of-Tax Amount:
Loss reclassified to net income	0	(218)
Loss activity recognized in other comprehensive loss	0	105
Total swap derivatives	0	(113)
Corn Option [Member]
Before-Tax Amount:
Loss reclassified to net income	(234)	(1,292)
Loss activity recognized in other comprehensive loss	296	(1,319)
Total swap derivatives	62	(2,611)
Tax (Expense) or Benefit:
Loss reclassified to net income	91	501
Loss activity recognized in other comprehensive loss	(115)	512
Total swap derivatives	(24)	1,013
Net-of-Tax Amount:
Loss reclassified to net income	(143)	(791)
Loss activity recognized in other comprehensive loss	181	(807)
Total swap derivatives	38	(1,598)
Accumulated Other Comprehensive Income (Loss) [Member]
Before-Tax Amount:
Foreign currency translation	(98,642)	20,615
Tax (Expense) or Benefit:
Foreign currency translation	0	0
Net-of-Tax Amount:
Foreign currency translation	$ (98,642)	$ 20,615