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Other Comprehensive Income (Schedule of OCI) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Before-Tax Amount: |  |  |  |
Amortization of prior service cost | $ 9 | $ 9 | $ 26 | $ 27
Amortization of actuarial loss | 888 | 1,204 | 2,664 | 3,610
Total defined benefit pension plans | 897 | 1,213 | 2,690 | 3,637
Other Comprehensive income (loss) | (4,436) | 48,848 | (64,835) | 112,843
Tax (Expense) or Benefit: |  |  |  |
Amortization of prior service cost | (3) | (3) | (7) | (8)
Amortization of actuarial loss | (226) | (451) | (682) | (1,351)
Total defined benefit pension plans | (229) | (454) | (689) | (1,359)
Other Comprehensive income (loss) | (208) | (1,006) | 846 | (662)
Net-of-Tax Amount: |  |  |  |
Amortization of prior service cost | 6 | 6 | 19 | 19
Amortization of actuarial loss | 662 | 753 | 1,982 | 2,259
Total defined benefit pension plans | 668 | 759 | 2,001 | 2,278
Foreign currency translation | (5,584) | 46,211 | (65,126) | 111,002
Net current-period other comprehensive income | (4,644) | 47,842 | (63,989) | 112,181
Natural Gas Swap [Member] |  |  |  |
Before-Tax Amount: |  |  |  |
Loss (gain) reclassified to net income | 0 | 0 | 14 | 0
Gain (loss) activity recognized in other comprehensive loss | 0 | 36 | 15 | 36
Total swap derivatives | 0 | 36 | 29 | 36
Tax (Expense) or Benefit: |  |  |  |
Loss (gain) reclassified to net income | 0 | 0 | (3) | 0
Gain (loss) activity recognized in other comprehensive loss | 0 | (14) | (4) | (14)
Total swap derivatives | 0 | (14) | (7) | (14)
Net-of-Tax Amount: |  |  |  |
Loss (gain) reclassified to net income | 0 | 0 | 11 | 0
Gain (loss) activity recognized in other comprehensive loss | 0 | 22 | 11 | 22
Total swap derivatives | 0 | 22 | 22 | 22
Soybean Meal [Member] |  |  |  |
Before-Tax Amount: |  |  |  |
Loss (gain) reclassified to net income | (4) | 0 | (4) | 0
Gain (loss) activity recognized in other comprehensive loss | 8 | 0 | 8 | 0
Total swap derivatives | 4 | 0 | 4 | 0
Tax (Expense) or Benefit: |  |  |  |
Loss (gain) reclassified to net income | 1 | 0 | 1 | 0
Gain (loss) activity recognized in other comprehensive loss | (2) | 0 | (2) | 0
Total swap derivatives | (1) | 0 | (1) | 0
Net-of-Tax Amount: |  |  |  |
Loss (gain) reclassified to net income | (3) | 0 | (3) | 0
Gain (loss) activity recognized in other comprehensive loss | 6 | 0 | 6 | 0
Total swap derivatives | 3 | 0 | 3 | 0
Corn Option [Member] |  |  |  |
Before-Tax Amount: |  |  |  |
Loss (gain) reclassified to net income | (563) | (1,352) | (1,554) | (3,750)
Gain (loss) activity recognized in other comprehensive loss | 507 | 2,740 | (65) | 1,918
Total swap derivatives | (56) | 1,388 | (1,619) | (1,832)
Tax (Expense) or Benefit: |  |  |  |
Loss (gain) reclassified to net income | 147 | 525 | 404 | 1,455
Gain (loss) activity recognized in other comprehensive loss | (131) | (1,063) | 17 | (744)
Total swap derivatives | 16 | (538) | 421 | 711
Net-of-Tax Amount: |  |  |  |
Loss (gain) reclassified to net income | (416) | (827) | (1,150) | (2,295)
Gain (loss) activity recognized in other comprehensive loss | 376 | 1,677 | (48) | 1,174
Total swap derivatives | (40) | 850 | (1,198) | (1,121)
Foreign Exchange Contract [Member] |  |  |  |
Before-Tax Amount: |  |  |  |
Gain (loss) activity recognized in other comprehensive loss | 468 | 0 | 468 | 0
Total swap derivatives | 468 | 0 | 468 | 0
Tax (Expense) or Benefit: |  |  |  |
Gain (loss) activity recognized in other comprehensive loss | (159) | 0 | (159) | 0
Total swap derivatives | (159) | 0 | (159) | 0
Net-of-Tax Amount: |  |  |  |
Gain (loss) activity recognized in other comprehensive loss | 309 | 0 | 309 | 0
Total swap derivatives | 309 | 0 | 309 | 0
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Before-Tax Amount: |  |  |  |
Foreign currency translation | (5,749) | 46,211 | (66,407) | 111,002
Tax (Expense) or Benefit: |  |  |  |
Foreign currency translation | 165 | 0 | 1,281 | 0
Net-of-Tax Amount: |  |  |  |
Foreign currency translation | $ (5,584) | $ 46,211 | $ (65,126) | $ 111,002

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