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Comprehensive Income Reclassifications (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales and operating expenses |  |  |  |  |  |  |  |  |  | $ 2,875,851 | $ 2,635,547 | $ 2,654,025
Amortization of prior service cost |  |  |  |  |  |  |  |  |  | (35) | (36) | 67
Amortization of actuarial loss |  |  |  |  |  |  |  |  |  | 4,786 | 4,632 | 5,101
Amortization of curtailment |  |  |  |  |  |  |  |  |  |  |  | (1,181)
Amortization of settlement |  |  |  |  |  |  |  |  |  | 42 | (114) | 5,291
Income taxes |  |  |  |  |  |  |  |  |  | 69,154 | (15,315) | (13,501)
Net income |  | $ 105,729 | $ 7,761 | $ 9,149 | $ 5,829 | $ 40,541 | $ 28,694 | $ 31,999 | $ 1,079 | 128,468 | 102,313 | 78,531
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 159 | (434) | (5,126)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Income from operations before income taxes |  |  |  |  |  |  |  |  |  | 5,220 | 3,868 | 1,517
Income taxes |  |  |  |  |  |  |  |  |  | (2,025) | (1,501) | (589)
Net income |  |  |  |  |  |  |  |  |  | 3,195 | 2,367 | 928
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments | Natural Gas Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales and operating expenses |  |  |  |  |  |  |  |  |  | (35) | 0 | 0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivative Instruments | Corn Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales and operating expenses |  |  |  |  |  |  |  |  |  | 5,255 | 3,868 | 1,517
Reclassification out of Accumulated Other Comprehensive Income [Member] | Defined Benefit Pension Plans |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amortization of prior service cost | [1] |  |  |  |  |  |  |  |  | (35) | (36) | 67
Amortization of actuarial loss | [1] |  |  |  |  |  |  |  |  | (4,786) | (4,632) | (5,101)
Amortization of curtailment | [1] |  |  |  |  |  |  |  |  | 0 | 0 | 1,181
Amortization of settlement | [1] |  |  |  |  |  |  |  |  | (42) | 114 | (5,291)
Income from operations before income taxes |  |  |  |  |  |  |  |  |  | (4,863) | (4,554) | (9,144)
Income taxes |  |  |  |  |  |  |  |  |  | 1,827 | 1,753 | 3,090
Net income |  |  |  |  |  |  |  |  |  | $ (3,036) | $ (2,801) | $ (6,054)
[1] | These items are included in the computation of net periodic pension cost. See Note 15 Employee Benefit Plans for additional information.

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