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v3.3.1.900

Related Party Transactions (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Related Party Transactions (Textual) |  |  |
Notes receivable outstanding from employees | $ 1,000,000 | $ 1,000,000 |
Commissions and fees payments to related party | 14,236 | 13,912 | $ 11,074
Total payments for various insurance policies | $ 143,367 | $ 140,374 | $ 124,149

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- Definition Notes receivable outstanding from employees. + References No definition available. + Details
Name: | gne_NotesReceivableOutstandingFromEmployees
Namespace Prefix: | gne_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Related party transaction aggregate payment made to related party. + References No definition available. + Details
Name: | gne_RelatedPartyTransactionAggregatePaymentMadeToRelatedParty
Namespace Prefix: | gne_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | gne_RelatedPartyTransactionsTextualAbstract
Namespace Prefix: | gne_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration