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ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) (Tables) | 3 Months Ended
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Mar. 31, 2013
ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) |
Changes in accumulated other comprehensive income / (loss) by component, net of tax |
(In thousands) |  | Net Gains (Losses) on Cash Flow Hedges |  | Postretirement Benefits |  | Total |
Balance at December 31, 2012 |  | $ | 30,717 |  | $ | (6,837 | ) | $ | 23,880 |
Other comprehensive income before reclassifications |  | (36,975 | ) | — |  | (36,975 | )
Amounts reclassified from accumulated other comprehensive income |  | (9,325 | ) | 125 |  | (9,200 | )
New current-period other comprehensive income |  | (46,300 | ) | 125 |  | (46,175 | )
Balance at March 31, 2013 |  | $ | (15,583 | ) | $ | (6,712 | ) | $ | (22,295 | )
Schedule of amount reclassified from accumulated other comprehensive income / (loss) into the Condensed Consolidated Statement of Operations |
(In thousands) |  | Three Months Ended March 31, 2013 |  | Affected Line Item in the Statement Where Net Income is Presented |
Net gains / (losses) on cash flow hedges |  |  |  |  |
Commodity contracts |  | $ | 13,328 |  | Natural gas revenues |
Commodity contracts |  | 2,042 |  | Crude oil and condensate revenues |
Postretirement benefits |  |  |  |  |
Amortization of net loss |  | (205 | ) | General and administrative expense |
|  | $ | 15,165 |  | Total before tax |
|  | $ | (5,965 | ) | Tax (expense) / benefit |
Total reclassifications for the period |  | $ | 9,200 |  | Net of tax |

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