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Derivative Financial Instruments (Details) | 3 Months Ended
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Mar. 31, 2014
Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 17,000,000
Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 216,600,000
Natural Gas Liquids |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 2,900,000
IF El Paso Permian [Member] |
Derivative Financial Instruments |
Index percent of natural gas fixed swaps | 3.00%
Index percent of natural gas collars | 3.00%
IF HSC [Member] |
Derivative Financial Instruments |
Index percent of natural gas fixed swaps | 83.00%
Index percent of natural gas collars | 64.00%
IF NGPL TXOK [Member] |
Derivative Financial Instruments |
Index percent of natural gas fixed swaps | 2.00%
Index percent of natural gas collars | 3.00%
IF NNG Ventura [Member] |
Derivative Financial Instruments |
Index percent of natural gas fixed swaps | 3.00%
Index percent of natural gas collars | 6.00%
IF Reliant N/S [Member] |
Derivative Financial Instruments |
Index percent of natural gas fixed swaps | 8.00%
Index percent of natural gas collars | 16.00%
IF NGPL MidCont [Member] |
Derivative Financial Instruments |
Index percent of natural gas fixed swaps | 1.00%
IF TETCO STX [Member] |
Derivative Financial Instruments |
Index percent of natural gas collars | 8.00%
OPIS Mont. Belvieu LDH Propane [Member] |
Derivative Financial Instruments |
Index percent of NGL fixed swaps | 72.00%
OPIS Mont. Belvieu Non-LDH Natural Gasoline [Member] |
Derivative Financial Instruments |
Index percent of NGL fixed swaps | 28.00%
Swap | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 11,271,000
Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 199,358,000
Swap | Natural Gas Liquids |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 2,917,000
Collar | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 5,693,000
Collar | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 17,196,000
Second Quarter Current Year [Member] | Swap | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 2,373,000
Weighted-Average Contract Price | 94.95
Second Quarter Current Year [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 23,758,000
Weighted-Average Contract Price | 3.98
Second Quarter Current Year [Member] | Swap | Natural Gas Liquids |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 1,096,000
Weighted-Average Contract Price | 58.04
Second Quarter Current Year [Member] | Collar | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 431,000
Weighted-Average Floor Price | 85.00
Weighted-Average Ceiling Price | 102.50
Second Quarter Current Year [Member] | Collar | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 4,194,000
Weighted-Average Floor Price | 4.38
Weighted-Average Ceiling Price | 5.29
Third Quarter Current Year [Member] | Swap | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 1,533,000
Weighted-Average Contract Price | 96.04
Third Quarter Current Year [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 24,541,000
Weighted-Average Contract Price | 4.02
Third Quarter Current Year [Member] | Swap | Natural Gas Liquids |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 960,000
Weighted-Average Contract Price | 58.06
Third Quarter Current Year [Member] | Collar | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 973,000
Weighted-Average Floor Price | 85.00
Weighted-Average Ceiling Price | 102.58
Fourth Quarter Current Year [Member] | Swap | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 1,353,000
Weighted-Average Contract Price | 94.88
Fourth Quarter Current Year [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 22,014,000
Weighted-Average Contract Price | 4.02
Fourth Quarter Current Year [Member] | Swap | Natural Gas Liquids |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 861,000
Weighted-Average Contract Price | 58.06
Fourth Quarter Current Year [Member] | Collar | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 923,000
Weighted-Average Floor Price | 85.00
Weighted-Average Ceiling Price | 102.63
2015 [Member] | Swap | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 3,308,000
Weighted-Average Contract Price | 89.34
2015 [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 57,943,000
Weighted-Average Contract Price | 4.04
2015 [Member] | Collar | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 3,366,000
Weighted-Average Floor Price | 85.00
Weighted-Average Ceiling Price | 94.25
2015 [Member] | Collar | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 13,002,000
Weighted-Average Floor Price | 3.98
Weighted-Average Ceiling Price | 4.30
2016 [Member] | Swap | Crude oil |
Derivative Financial Instruments |
Portion of future oil and NGL production hedged | 2,704,000
Weighted-Average Contract Price | 85.19
2016 [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 37,472,000
Weighted-Average Contract Price | 4.17
2017 [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 23,430,000
Weighted-Average Contract Price | 4.21
2018 [Member] | Swap | Natural Gas |
Derivative Financial Instruments |
Portion of Gas Production Being Hedged | 10,200,000
Weighted-Average Contract Price | 4.31
Revolving Credit Facility [Member] |
Derivative Financial Instruments |
Percentage of Proved Oil and Gas Properties Secured for Credit Facility Borrowing | 75.00%

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- Definition Index percent of NGL fixed swaps + References No definition available. + Details
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- Definition The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract. + References No definition available. + Details
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- Definition The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract. + References No definition available. + Details
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- Definition Average fixed price related to the group of price risk swap derivatives. + References No definition available. + Details
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- Definition The quantity of future oil and gas production being hedged. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 12.D.3(b)) -URI http://asc.fasb.org/extlink&oid=27015634&loc=d3e516453-122869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 12 -Section D -Paragraph b -Subsection 3 + Details
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