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Investment in Shoreditch Energy Limited (Details) - Shoreditch [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Schedule of Equity Method Investments [Line Items] |  |  |  |
Revenues | $ 437 |  | $ 766 |
Operating expenses: |  |  |  |
Cost of revenues | 455 |  | 825 |
Selling, general and administrative | 1,152 | 244 | 2,916 | 244
Loss from operations | (1,170) | (244) | (2,975) | (244)
Other |  |  |  |
Net Income | (1,170) | (244) | (2,975) | (244)
Genie's equity in net loss | $ (767) | $ (159) | $ (1,988) | $ (159)

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