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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Line items in income statement impacted by reclassifications out of accumulated other comprehensive income |  |  |  |
Natural gas revenues | $ 224,806 | $ 437,761 | $ 584,997 | $ 870,571
Crude oil and condensate revenues | 81,233 | 86,341 | 143,791 | 145,485
Total before tax | (43,130) | 194,319 | 20,599 | 372,249
Tax benefit (expense) | 15,622 | (75,899) | (7,852) | (146,798)
NET INCOME (LOSS) | (27,508) | 118,420 | 12,747 | 225,451
Amount reclassified from accumulated other comprehensive income |  |  |  |
Line items in income statement impacted by reclassifications out of accumulated other comprehensive income |  |  |  |
Total before tax | 0 | (22,956) | 0 | (93,731)
Tax benefit (expense) | 0 | 9,149 | 0 | 37,359
NET INCOME (LOSS) | 0 | (13,807) | 0 | (56,372)
Gain (loss) on cash flow hedges | Amount reclassified from accumulated other comprehensive income | Commodity contracts |  |  |  |
Line items in income statement impacted by reclassifications out of accumulated other comprehensive income |  |  |  |
Natural gas revenues | 0 | (22,320) | 0 | (92,877)
Crude oil and condensate revenues | $ 0 | $ (636) | $ 0 | $ (854)

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition Revenue from natural gas production during the reporting period. Natural gas consists largely of the hydrocarbon methane, and is found in underground formations either by itself or with crude oil. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62136-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e62246-109447 + Details
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