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Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 08, 2017
Entity Registrant Name	Genie Energy Ltd.
Entity Central Index Key	0001528356
Trading Symbol	GNE
Amendment Flag	true
Amendment Description	Genie Energy Ltd. (the “Company”) is filing this Amendment No. 1 on Form 10-Q/A (“Amendment No. 1”) in order to correct its revenues, cost of revenues, income from operations, net income and earnings per share, and revise the Company’s disclosure in Item 4 of Part I, Controls and Procedures.
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Entity Filer Category	Accelerated Filer
Class A Common Stock
Entity Common Stock, Shares Outstanding		1,574,326
Class B Common Stock
Entity Common Stock, Shares Outstanding		23,101,681

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