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Other Comprehensive Income (Tables) | 6 Months Ended
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Jun. 29, 2013
Comprehensive Income [Abstract] |
Schedule of Comprehensive Income (Loss) | The components of other comprehensive income (loss) and the related tax impacts for the three and six months ended June 29, 2013 and June 30, 2012 are as follows (in thousands):
| Three Months Ended
| Before-Tax |  | Tax (Expense) |  | Net-of-Tax
| Amount |  | or Benefit |  | Amount
| June 29, 2013 | June 30, 2012 |  | June 29, 2013 | June 30, 2012 |  | June 29, 2013 | June 30, 2012
Defined benefit pension plans |  |  |  |  |  |  |  |
Amortization of prior service cost | $ | 15 |  | $ | 22 |  |  | $ | (6 | ) | $ | (8 | ) |  | $ | 9 |  | $ | 14 |
Amortization of actuarial loss | 1,300 |  | 1,189 |  |  | (504 | ) | (461 | ) |  | 796 |  | 728 |
Total defined benefit pension plans | 1,315 |  | 1,211 |  |  | (510 | ) | (469 | ) |  | 805 |  | 742 |
Natural gas swap derivatives |  |  |  |  |  |  |  |
Loss/(gain) reclassified to net income | (244 | ) | 295 |  |  | 94 |  | (114 | ) |  | (150 | ) | 181 |
Gain/(loss) activity recognized in other comprehensive income (loss) | (97 | ) | 217 |  |  | 38 |  | (84 | ) |  | (59 | ) | 133 |
Total natural gas swap derivatives | (341 | ) | 512 |  |  | 132 |  | (198 | ) |  | (209 | ) | 314 |
Corn option derivatives |  |  |  |  |  |  |  |
Loss/(gain) reclassified to net income | (866 | ) | — |  |  | 336 |  | — |  |  | (530 | ) | — |
Gain/(loss) activity recognized in other comprehensive income (loss) | 1,450 |  | — |  |  | (562 | ) | — |  |  | 888 |  | — |
Total corn option derivatives | 584 |  | — |  |  | (226 | ) | — |  |  | 358 |  | — |
Interest rate swap derivatives |  |  |  |  |  |  |  |
Loss reclassified to net income | — |  | 28 |  |  | — |  | (11 | ) |  | — |  | 17 |
Other comprehensive income (loss) | $ | 1,558 |  | $ | 1,751 |  |  | $ | (604 | ) | $ | (678 | ) |  | $ | 954 |  | $ | 1,073 |
| Six Months Ended
| Before-Tax |  | Tax (Expense) |  | Net-of-Tax
| Amount |  | or Benefit |  | Amount
| June 29, 2013 | June 30, 2012 |  | June 29, 2013 | June 30, 2012 |  | June 29, 2013 | June 30, 2012
Defined benefit pension plans |  |  |  |  |  |  |  |
Amortization of prior service cost | $ | 30 |  | $ | 44 |  |  | $ | (12 | ) | $ | (16 | ) |  | $ | 18 |  | $ | 28 |
Amortization of actuarial loss | 2,600 |  | 2,378 |  |  | (1,008 | ) | (922 | ) |  | 1,592 |  | 1,456 |
Total defined benefit pension plans | 2,630 |  | 2,422 |  |  | (1,020 | ) | (938 | ) |  | 1,610 |  | 1,484 |
Natural gas swap derivatives |  |  |  |  |  |  |  |
Loss/(gain) reclassified to net income | (187 | ) | 1,008 |  |  | 72 |  | (390 | ) |  | (115 | ) | 618 |
Gain/(loss) activity recognized in other comprehensive income (loss) | 87 |  | (483 | ) |  | (33 | ) | 186 |  |  | 54 |  | (297 | )
Total natural gas swap derivatives | (100 | ) | 525 |  |  | 39 |  | (204 | ) |  | (61 | ) | 321 |
Corn option derivatives |  |  |  |  |  |  |  |
Loss/(gain) reclassified to net income | (908 | ) | — |  |  | 352 |  | — |  |  | (556 | ) | — |
Gain/(loss) activity recognized in other comprehensive income (loss) | 3,041 |  | — |  |  | (1,178 | ) | — |  |  | 1,863 |  | — |
Total corn option derivatives | 2,133 |  | — |  |  | (826 | ) | — |  |  | 1,307 |  | — |
Interest rate swap derivatives |  |  |  |  |  |  |  |
Loss reclassified to net income | — |  | 260 |  |  | — |  | (101 | ) |  | — |  | 159 |
Other Comprehensive income (loss) | $ | 4,663 |  | $ | 3,207 |  |  | $ | (1,807 | ) | $ | (1,243 | ) |  | $ | 2,856 |  | $ | 1,964 |
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following table presents the amounts reclassified out of each component of other comprehensive income (loss), net of tax for the three and six months ended June 29, 2013 and June 30, 2012 as follows (in thousands):
| Three Months Ended |  | Six Months Ended |
| June 29, 2013 | June 30, 2012 |  | June 29, 2013 | June 30, 2012 | Statement of Operations Classification
Derivative instruments |  |  |  |  |  |
Natural gas swap derivatives | $ | 244 |  | $ | (295 | ) |  | $ | 187 |  | $ | (1,008 | ) | Cost of sales and operating expenses
Corn option derivatives | 866 |  | — |  |  | 908 |  | — |  | Cost of sales and operating expenses
Interest rate swap derivatives | — |  | (28 | ) |  | — |  | (260 | ) | Interest expense
| 1,110 |  | (323 | ) |  | 1,095 |  | (1,268 | ) | Total before tax
| (430 | ) | 125 |  |  | (424 | ) | 491 |  | Income taxes
| 680 |  | (198 | ) |  | 671 |  | (777 | ) | Net of tax
Defined benefit pension plans |  |  |  |  |  |
Amortization of prior service cost | $ | (15 | ) | $ | (22 | ) |  | $ | (30 | ) | $ | (44 | ) | (a)
Amortization of actuarial loss | (1,300 | ) | (1,189 | ) |  | (2,600 | ) | (2,378 | ) | (a)
| (1,315 | ) | (1,211 | ) |  | (2,630 | ) | (2,422 | ) | Total before tax
| 510 |  | 469 |  |  | 1,020 |  | 938 |  | Income taxes
| (805 | ) | (742 | ) |  | (1,610 | ) | (1,484 | ) | Net of tax
Total reclassifications | $ | (125 | ) | $ | (940 | ) |  | $ | (939 | ) | $ | (2,261 | ) | Net of tax
(a) | These items are included in the computation of net periodic pension cost. See Note 8 Employee Benefit Plans for additional information.
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table presents changes in each component of accumulated comprehensive income (loss) as of June 29, 2013 as follows (in thousands):
|  | Six Months Ended June 29, 2013
|  | Derivative | Defined Benefit |
|  | Instruments | Pension Plans | Total
Accumulated Other Comprehensive Income (loss) December 29, 2012, net of tax |  | $ | 180 |  | $ | (31,509 | ) | $ | (31,329 | )
Other comprehensive gain before reclassifications |  | 1,917 |  | — |  | 1,917 |
Amounts reclassified from accumulated other comprehensive income (loss) |  | (671 | ) | 1,610 |  | 939 |
Net current-period other comprehensive income |  | 1,246 |  | 1,610 |  | 2,856 |
Accumulated Other Comprehensive Income (loss) June 29, 2013, net of tax |  | $ | 1,426 |  | $ | (29,899 | ) | $ | (28,473 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e526-108580 + Details
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