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Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2016
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows:
(In thousands) | Net Gains (Losses) on Cash Flow Hedges |  | Postretirement Benefits |  | Total
Balance at December 31, 2013 | $ | (6,551 | ) |  | $ | (1,810 | ) |  | $ | (8,361 | )
Other comprehensive income (loss) before reclassifications | (80,175 | ) |  | (325 | ) |  | (80,500 | )
Amounts reclassified from accumulated other comprehensive income (loss) | 86,726 |  |  | (16 | ) |  | 86,710 |
Net current-period other comprehensive income (loss) | 6,551 |  |  | (341 | ) |  | 6,210 |
Balance at December 31, 2014 | $ | — |  |  | $ | (2,151 | ) |  | $ | (2,151 | )
Other comprehensive income (loss) before reclassifications | — |  |  | 1,786 |  |  | 1,786 |
Net current-period other comprehensive income | — |  |  | 1,786 |  |  | 1,786 |
Balance at December 31, 2015 | $ | — |  |  | $ | (365 | ) |  | $ | (365 | )
Other comprehensive income (loss) before reclassifications | — |  |  | 1,280 |  |  | 1,280 |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | 70 |  |  | 70 |
Net current-period other comprehensive income | — |  |  | 1,350 |  |  | 1,350 |
Balance at December 31, 2016 | $ | — |  |  | $ | 985 |  |  | $ | 985 |
Amounts reclassified from accumulated other comprehensive income (loss) into the Consolidated Statement of Operations were as follows:
| Year Ended December 31, |  | Affected Line Item in the Consolidated Statement of Operations
(In thousands) | 2016 |  | 2015 |  | 2014 |
Net gains (losses) on cash flow hedges |  |  |  |  |  |  |  |  |  |
Commodity contracts | $ | — |  |  | $ | — |  |  | $ | (143,577 | ) |  | Natural gas revenues
Commodity contracts | — |  |  | — |  |  | (626 | ) |  | Crude oil and condensate revenues
Postretirement benefits |  |  |  |  |  |  |  |  |  |
Amortization of prior service cost | (111 | ) |  | — |  |  | — |  |  | General and administrative expense
Amortization of net (gain) loss | — |  |  | — |  |  | 26 |  |  | General and administrative expense
Total before tax | (111 | ) |  | — |  |  | (144,177 | ) |  | Income (loss) before income taxes
| 41 |  |  | — |  |  | 57,467 |  |  | Income tax benefit
Total reclassifications for the period | $ | (70 | ) |  | $ | — |  |  | $ | (86,710 | ) |  | Net income (loss)

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + 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=66004124&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 7: 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=66004124&loc=d3e637-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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