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Subsequent Events (Details) (Subsequent Event [Member], Swap [Member]) | Jul. 31, 2013
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Natural Gas Fixed Price Swap, October through December 2013 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional quantity | 10,000
Average fixed price | 4.00
Oil Fixed Price Swap, January through December 2014 [Member] | Oil [Member] |
Derivative [Line Items] |
Notional quantity | 2,000
Average fixed price | 101.65
Natual Gas Fixed Price Swap, January through December 2014 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional quantity | 15,000
Average fixed price | 4.01
Natural Gas Fixed Price Swap, January 2015 through March 2016 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional quantity | 10,000
Average fixed price | 4.00

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- Definition The number of derivative instruments of a particular group held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 + 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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