XML 15 R55.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Hedging Activities (Schedule Of Derivative Instruments) (Details) | Mar. 31, 2013
--- | ---
Fixed Price Swap, Period of April through June 2013 [Member] |
Derivative [Line Items] |
Daily Volume (Bbls/day) | 5,000
Weighted Average Price (usd per bbl) | 101.96
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

X
- 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
Name: | invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average fixed price related to the group of price risk swap derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix: | us-gaap_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant