Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Before-Tax Amount
Actuarial (loss)/gain recognized	$ 4,027	$ (5,257)	$ (3,822)
Amortization of actuarial loss	4,786	4,632	5,101
Amortization of curtailment			(1,181)
Amortization of prior service costs	35	36	(67)
Amortization of settlement	42	(114)	5,291
Other	30	44	471
Total defined benefit pension plans	8,920	(659)	5,793
Tax (Expense) or Benefit
Actuarial (loss)/gain recognized	(1,264)	1,396	1,499
Amortization of actuarial loss	(1,801)	(1,786)	(1,986)
Amortization of curtailment			328
Amortization of prior service costs	(11)	(12)	36
Amortization of settlement	(15)	45	(1,468)
Other	0	0	0
Total defined benefit pension plans	(3,091)	(357)	(1,591)
Net-of-Tax Amount
Actuarial (loss)/gain recognized	2,763	(3,861)	(2,323)
Amortization of actuarial loss	2,985	2,846	3,115
Amortization of prior service costs	24	24	(31)
Amortization of curtailment			(853)
Amortization of settlement	27	(69)	3,823
Other	30	44	471
Total defined benefit pension plans	5,829	(1,016)	4,202
Before-Tax Amount
Loss/(gain) reclassified to net income			162,436
Gain/(loss) recognized in other comprehensive income (loss)	3,400	4,900
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income			0
Gain/(loss) recognized in other comprehensive income (loss)	(1,300)	(1,900)
Net-of-Tax Amount
Loss/(gain) reclassified to net income			162,436
Other comprehensive income/(loss)	128,939	(5,231)	(153,755)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(2,396)	(753)	(2,712)
Total other comprehensive income, net of tax	126,543	(5,984)	(156,467)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	121,810	(5,593)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	0	0
Foreign currency translation adjustments	121,810	(5,593)	(162,436)
Natural Gas Swap [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income	35
Gain/(loss) recognized in other comprehensive income (loss)	(65)
Total natural gas derivatives	(30)
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income	(14)
Gain/(loss) recognized in other comprehensive income (loss)	26
Total natural gas derivatives	12
Net-of-Tax Amount
Loss/(gain) reclassified to net income	21
Gain/(loss) recognized in other comprehensive income (loss)	(39)
Total natural gas derivatives	(18)		0
Corn Option [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income	(5,255)	(3,868)	(1,517)
Gain/(loss) recognized in other comprehensive income (loss)	3,494	4,889	4,405
Total natural gas derivatives	(1,761)	1,021	2,888
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income	2,039	1,501	589
Gain/(loss) recognized in other comprehensive income (loss)	(1,356)	(1,897)	(1,710)
Total natural gas derivatives	683	(396)	(1,121)
Net-of-Tax Amount
Loss/(gain) reclassified to net income	(3,216)	(2,367)	(928)
Gain/(loss) recognized in other comprehensive income (loss)	2,138	2,992	2,695
Total natural gas derivatives	$ (1,078)	$ 625	$ 1,767