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Business Segment Information (Details Textual)	12 Months Ended
	Dec. 31, 2015 Segment
Business Segment Information (Textual)
Number of reportable segments	3
GEIC [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	99.30%
Genie Retail Energy [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	100.00%
Ownership interest of company	3.90%
GOGAS [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	92.00%
AMSO, LLC [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	41.30%
Israel Energy Initiatives Ltd [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	86.10%
Afek Oil and Gas Ltd [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	86.50%
Genie Mongolia [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	88.40%
AMSO [Member]
Business Segment Information (Textual)
Company's investment, ownership percentage in subsidiary	98.30%

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