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Other Comprehensive Income (Schedule of OCI) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Apr. 01, 2017
Before-Tax Amount: |  |
Amortization of prior service cost | $ 9 | $ 9
Amortization of actuarial loss | 888 | 1,203
Total defined benefit pension plans | 897 | 1,212
Gain (loss) activity recognized in other comprehensive loss | (1,500) |
Other Comprehensive income (loss) | 16,057 | 15,091
Tax (Expense) or Benefit: |  |
Amortization of prior service cost | (3) | (3)
Amortization of actuarial loss | (227) | (450)
Total defined benefit pension plans | (230) | (453)
Gain (loss) activity recognized in other comprehensive loss | (400) | (200)
Other Comprehensive income (loss) | 322 | 245
Net-of-Tax Amount: |  |
Amortization of prior service cost | 6 | 6
Amortization of actuarial loss | 661 | 753
Total defined benefit pension plans | 667 | 759
Gain (loss) activity recognized in other comprehensive loss |  | (600)
Foreign currency translation | 17,295 | 15,679
Net current-period other comprehensive income | 16,379 | 15,336
Natural Gas Swap [Member] |  |
Before-Tax Amount: |  |
Loss (gain) reclassified to net income | 14 | 0
Gain (loss) activity recognized in other comprehensive loss | 16 | 0
Total swap derivatives | 30 | 0
Tax (Expense) or Benefit: |  |
Loss (gain) reclassified to net income | (4) | 0
Gain (loss) activity recognized in other comprehensive loss | (4) | 0
Total swap derivatives | (8) | 0
Net-of-Tax Amount: |  |
Loss (gain) reclassified to net income | 10 | 0
Gain (loss) activity recognized in other comprehensive loss | 12 | 0
Total swap derivatives | 22 | 0
Corn Option [Member] |  |
Before-Tax Amount: |  |
Loss (gain) reclassified to net income | (668) | (1,185)
Gain (loss) activity recognized in other comprehensive loss | (1,497) | (615)
Total swap derivatives | (2,165) | (1,800)
Tax (Expense) or Benefit: |  |
Loss (gain) reclassified to net income | 173 | 460
Gain (loss) activity recognized in other comprehensive loss | 387 | 238
Total swap derivatives | 560 | 698
Net-of-Tax Amount: |  |
Loss (gain) reclassified to net income | (495) | (725)
Gain (loss) activity recognized in other comprehensive loss | (1,110) | (377)
Total swap derivatives | (1,605) | (1,102)
Accumulated Other Comprehensive Income (Loss) [Member] |  |
Before-Tax Amount: |  |
Foreign currency translation | 17,295 | 15,679
Tax (Expense) or Benefit: |  |
Foreign currency translation | 0 | 0
Net-of-Tax Amount: |  |
Foreign currency translation | $ 17,295 | $ 15,679

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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e689-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
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- Definition Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
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