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Business Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | [2] | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Operating results for the business segments |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 43,915 | $ 52,238 | $ 39,527 | $ 74,429 | $ 49,687 | [1] | $ 46,186 | $ 48,810 | $ 130,348 | $ 210,109 | $ 275,031 | $ 279,174
Income (loss) from operations | $ (3,674) | $ 3,839 | $ (4,332) | $ (1,715) | (10,666) | [1] | (4,107) | $ (4,344) | $ (6,493) | (5,882) | (25,610) | 626
Depreciation |  |  |  |  |  |  |  |  |  | 428 | 132 | 110
Research and development |  |  |  |  |  |  |  |  |  | 1,985 | 5,538 | 7,357
Exploration |  |  |  |  |  |  |  |  |  | $ 6,583 | 6,971 | $ 4,032
Goodwill impairment |  |  |  |  | $ 3,600 |  |  |  |  |  | $ 3,562 |
Equity in the net loss of AMSO, LLC |  |  |  |  |  |  |  |  |  | $ 397 |  | $ 3,194
Genie Retail Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Operating results for the business segments |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  | $ 46,186 |  |  | 210,109 | $ 275,031 | 279,174
Income (loss) from operations |  |  |  |  |  |  |  |  |  | 13,542 | 3,516 | 25,696
Depreciation |  |  |  |  |  |  |  |  |  | $ 245 | $ 24 | $ 15
Research and development |  |  |  |  |  |  |  |  |  |  |  |
Exploration |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  | $ 3,562 |
Equity in the net loss of AMSO, LLC |  |  |  |  |  |  |  |  |  |  |  |
Afek Oil And Gas Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  |
Operating results for the business segments |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from operations |  |  |  |  |  |  |  |  |  | $ (7,458) | $ (7,294) | $ (4,255)
Depreciation |  |  |  |  |  |  |  |  |  | 104 | 8 | 2
Research and development |  |  |  |  |  |  |  |  |  | 63 | 144 | 186
Exploration |  |  |  |  |  |  |  |  |  | $ 6,583 | $ 6,971 | $ 4,032
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  |
Equity in the net loss of AMSO, LLC |  |  |  |  |  |  |  |  |  |  |  |
Genie Oil and Gas [Member] |  |  |  |  |  |  |  |  |  |  |  |
Operating results for the business segments |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from operations |  |  |  |  |  |  |  |  |  | $ (3,058) | $ (6,479) | $ (11,700)
Depreciation |  |  |  |  |  |  |  |  |  | 78 | 99 | 92
Research and development |  |  |  |  |  |  |  |  |  | $ 1,922 | $ 5,394 | $ 7,171
Exploration |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  |
Equity in the net loss of AMSO, LLC |  |  |  |  |  |  |  |  |  | $ 397 |  | $ 3,194
Corporate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Operating results for the business segments |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from operations |  |  |  |  |  |  |  |  |  | $ (8,908) | $ (15,353) | $ (9,115)
Depreciation |  |  |  |  |  |  |  |  |  | $ 1 | $ 1 | $ 1
Research and development |  |  |  |  |  |  |  |  |  |  |  |
Exploration |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  |
Equity in the net loss of AMSO, LLC |  |  |  |  |  |  |  |  |  |  |  |
[1] | In the fourth quarter of 2014, loss from operations includes goodwill impairment of $3.6 million and gain on adjustment to estimated contingent payments of $0.2 million.
[2] | Unusually cold weather in the first quarter of 2014 that affected the overall demand for electricity and natural gas for heat caused a significant increase in revenues and direct cost of revenues in the first quarter of 2014 compared to the same period in 2015. The winter's polar vortex resulted in extraordinarily large spikes in the prices of wholesale electricity and natural gas in markets where GRE and other REPs purchased their supply.

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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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