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Business Segment Information (Details Textual) | 12 Months Ended
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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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