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CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Statement Of Income And Comprehensive Income [Abstract] |  |
Realized loss (gain) on hedge derivative contract settlements reclassified into natural gas, NGLs and oil sales from other comprehensive income, tax portion |  | $ 9,488
De-designated hedges reclassified into natural gas, NGLs and oil sales, tax portion | $ 3,986 | 35,968
De-designated hedges reclassified to derivative fair value income, tax portion |  | 1,517
Change in unrealized deferred hedging (losses) gains, tax effect |  | $ 2,687

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- Definition Amount of taxes related to reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments, previously designated and qualifying as the effective portion of cash flow hedges which are now being amortized and reclassified into Natural gas, NGLs and oil sales. + References No definition available. + Details
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- Definition Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: 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=36458714&loc=d3e640-108580 + Details
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