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Subsequent Events (Details) (Subsequent Event [Member], Swap [Member], Natural Gas [Member]) | Oct. 31, 2013
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Natural Gas Fixed Price Swap, January 2014 Through April 2016 [Member] |
Derivative [Line Items] |
Notional quantity | 30,000
Average fixed price | 4.11
Natual Gas Fixed Price Swap, January 2015 Through April 2016 [Member] |
Derivative [Line Items] |
Notional quantity | 40,000
Average fixed price | 4.15

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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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