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Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 07, 2013 Class A common stock	Nov. 07, 2013 Class B common stock
Entity Registrant Name	Genie Energy Ltd.
Entity Central Index Key	0001528356
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		1,574,326	19,625,948

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