Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Before-Tax Amount
Actuarial (loss)/gain recognized	$ (7,901)	$ 4,027	$ (5,257)
Amortization of actuarial loss	3,543	4,786	4,632
Actuarial prior service cost recognized	(11)
Amortization of curtailment	498
Amortization of prior service costs	35	35	36
Amortization of settlement	(3)	42	(114)
Other	9	30	44
Total defined benefit pension plans	(3,830)	8,920	(659)
Tax (Expense) or Benefit
Actuarial (loss)/gain recognized	2,015	(1,264)	1,396
Amortization of actuarial loss	(910)	(1,801)	(1,786)
Actuarial prior service cost recognized	3
Amortization of curtailment	0
Amortization of prior service costs	(9)	(11)	(12)
Amortization of settlement	1	(15)	45
Other	0	0	0
Total defined benefit pension plans	1,100	(3,091)	(357)
Net-of-Tax Amount
Actuarial (loss)/gain recognized	(5,886)	2,763	(3,861)
Amortization of actuarial loss	2,633	2,985	2,846
Actuarial prior service cost recognized	(8)	0
Amortization of prior service costs	26	24	24
Amortization of curtailment	498	0
Amortization of settlement	(2)	27	(69)
Other	9	30	44
Total defined benefit pension plans	(2,730)	5,829	(1,016)
Before-Tax Amount
Other comprehensive income/(loss)	(89,198)	121,810	(5,593)
Tax (Expense) or Benefit
Other comprehensive income/(loss)	1,724	0	0
Net-of-Tax Amount
Foreign currency translation adjustments	(87,474)	121,810	(5,593)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	2,847	(2,396)	(753)
Other comprehensive income/(loss)	(93,634)	128,939	(5,231)
Total other comprehensive income/(loss), net of tax	(90,787)	126,543	(5,984)
Soybean Meal [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income	(8)
Gain/(loss) recognized in other comprehensive income (loss)	8
Total derivatives	0
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income	(2)
Gain/(loss) recognized in other comprehensive income (loss)	2
Total derivatives	0
Net-of-Tax Amount
Loss/(gain) reclassified to net income	(6)
Gain/(loss) recognized in other comprehensive income (loss)	6
Total derivatives, net of tax	0
Natural Gas Swap [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income	14	35
Gain/(loss) recognized in other comprehensive income (loss)	16	(65)
Total natural gas derivatives	30	(30)
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income	(3)	(14)
Gain/(loss) recognized in other comprehensive income (loss)	(4)	26
Total derivatives	(7)	12
Net-of-Tax Amount
Loss/(gain) reclassified to net income	11	21
Gain/(loss) recognized in other comprehensive income (loss)	12	(39)
Total derivatives, net of tax	23	(18)	0
Total derivatives	23	(18)
Corn Option [Member]
Before-Tax Amount
Loss/(gain) reclassified to net income	(1,912)	(5,255)	(3,868)
Gain/(loss) recognized in other comprehensive income (loss)	(361)	3,494	4,889
Total natural gas derivatives	(2,273)	(1,761)	1,021
Tax (Expense) or Benefit
Loss/(gain) reclassified to net income	493	2,039	1,501
Gain/(loss) recognized in other comprehensive income (loss)	93	(1,356)	(1,897)
Total derivatives	586	683	(396)
Net-of-Tax Amount
Loss/(gain) reclassified to net income	(1,419)	(3,216)	(2,367)
Gain/(loss) recognized in other comprehensive income (loss)	(268)	2,138	2,992
Total derivatives, net of tax	(1,687)	(1,078)	625
Total derivatives	(1,687)	(1,078)	625
Foreign Exchange Contract [Member]
Before-Tax Amount
Gain/(loss) recognized in other comprehensive income (loss)	1,637
Total derivatives	1,637
Tax (Expense) or Benefit
Gain/(loss) recognized in other comprehensive income (loss)	(556)
Total derivatives	(556)
Net-of-Tax Amount
Gain/(loss) recognized in other comprehensive income (loss)	1,081
Total derivatives, net of tax	1,081	$ 0	$ 0
Total derivatives	$ 1,081