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ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS) (Tables) | 9 Months Ended
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Sep. 30, 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 |  | 31,417 |  | — |  | 31,417 |
Amounts reclassified from accumulated other comprehensive income |  | (22,372 | ) | 319 |  | (22,053 | )
Net current-period other comprehensive income |  | 9,045 |  | 319 |  | 9,364 |
Balance at September 30, 2013 |  | $ | 39,762 |  | $ | (6,518 | ) | $ | 33,244 |
Schedule of amount reclassified from accumulated other comprehensive income / (loss) into the Condensed Consolidated Statement of Operations |
(In thousands) |  | Three Months Ended September 30, 2013 |  | Nine Months Ended September 30, 2013 |  | Affected Line Item in the Condensed Consolidated Statement of Operations |
Net gains / (losses) on cash flow hedges |  |  |  |  |  |  |
Commodity contracts |  | $ | 20,766 |  | $ | 33,822 |  | Natural gas revenues |
Commodity contracts |  | (1,082 | ) | 3,054 |  | Crude oil and condensate revenues |
Postretirement benefits |  |  |  |  |  |  |
Amortization of net loss |  | (116 | ) | (525 | ) | General and administrative expense |
|  | 19,568 |  | 36,351 |  | Total before tax |
|  | (7,696 | ) | (14,298 | ) | Tax (expense) / benefit |
Total reclassifications for the period |  | $ | 11,872 |  | $ | 22,053 |  | Net of tax |

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