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Suspended Exploratory Well Costs - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 Well | Dec. 31, 2013 | Dec. 31, 2014 Scenario, Forecast Well
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Projects With Exploratory Well Costs Capitalized For More Than One Year [Line Items] |  |  |
Capitalized exploratory well costs that have been capitalized for a period greater than one year | $ 35,584 | $ 6,964 |
Number of wells waiting on pipeline | 1 |  |
Number of wells expected to be producing within next quarter |  |  | 4

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- Definition The amount of exploratory well costs that have been capitalized for a period of greater than one year after the completion of drilling. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -Subparagraph b -URI http://asc.fasb.org/extlink&oid=8451039&loc=SL6806780-109447 + Details
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