Other Comprehensive Income (Schedule of OCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Before-Tax Amount:
Amortization of prior service cost	$ 8	$ 9
Amortization of actuarial loss	854	1,146
Total defined benefit pension plans	862	1,155
Foreign currency translation	(65,887)	(5,393)
Other Comprehensive income (loss)	(63,682)	(7,172)
Tax (Expense) or Benefit:
Amortization of prior service cost	(2)	(3)
Amortization of actuarial loss	(212)	(294)
Total defined benefit pension plans	(214)	(297)
Foreign currency translation	651	507
Other Comprehensive income (loss)	949	1,207
Net-of-Tax Amount:
Amortization of prior service cost	6	6
Amortization of actuarial loss	642	852
Total defined benefit pension plans	648	858
Foreign currency translation	(65,236)	(4,886)
Net current-period other comprehensive income	(62,733)	(5,965)
Corn Option [Member]
Before-Tax Amount:
Loss (gain) reclassified to net income	300	0
Gain (loss) activity recognized in other comprehensive loss	(119)	0
Total swap derivatives	181	0
Tax (Expense) or Benefit:
Loss (gain) reclassified to net income	(75)	0
Gain (loss) activity recognized in other comprehensive loss	30	0
Total swap derivatives	(45)	0
Net-of-Tax Amount:
Loss (gain) reclassified to net income	225	0
Gain (loss) activity recognized in other comprehensive loss	(89)	0
Total swap derivatives	136	0
Heating Oil Swaps And Options [Member]
Before-Tax Amount:
Gain (loss) activity recognized in other comprehensive loss	14,494	0
Total swap derivatives	14,494	0
Tax (Expense) or Benefit:
Gain (loss) activity recognized in other comprehensive loss	(3,624)	0
Total swap derivatives	(3,624)	0
Net-of-Tax Amount:
Gain (loss) activity recognized in other comprehensive loss	10,870	0
Total swap derivatives	10,870	0
Foreign Exchange Contract [Member]
Before-Tax Amount:
Loss (gain) reclassified to net income	(412)	0
Gain (loss) activity recognized in other comprehensive loss	(12,920)	(2,934)
Total swap derivatives	(13,332)	(2,934)
Tax (Expense) or Benefit:
Loss (gain) reclassified to net income	129	0
Gain (loss) activity recognized in other comprehensive loss	4,052	997
Total swap derivatives	4,181	997
Net-of-Tax Amount:
Loss (gain) reclassified to net income	(283)	0
Gain (loss) activity recognized in other comprehensive loss	(8,868)	(1,937)
Total swap derivatives	(9,151)	(1,937)
Accumulated Other Comprehensive Loss
Net-of-Tax Amount:
Foreign currency translation	(65,147)	(6,645)
Accumulated Other Comprehensive Loss | Corn Option [Member]
Net-of-Tax Amount:
Total swap derivatives	136
Accumulated Other Comprehensive Loss | Foreign Exchange Contract [Member]
Net-of-Tax Amount:
Total swap derivatives	$ (9,151)	$ (1,937)