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Hedging Activities (Schedule Of Derivative Instruments) (Details) (Fixed Price Swap, Period of July through December 2013 [Member]) | Jun. 30, 2013
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Fixed Price Swap, Period of July through December 2013 [Member] |
Derivative [Line Items] |
Daily Volume (Bbls/day) | 5,000
Weighted Average Price (usd per bbl) | 99.86

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration

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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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