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Acquisition (Selected Financial Information) (Details) (American Phoenix Acquisition [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015
American Phoenix Acquisition [Member] |
SelectedFinancialInformation [Line Items] |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual | $ 1,397 us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = gel_AmericanPhoenixAcquisitionMember
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual | $ 5,580 us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = gel_AmericanPhoenixAcquisitionMember

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- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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