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Discontinued Operations - Schedule of Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Revenues | $ 4,350 | $ 8,659
Gross profit | 2,447 | 3,525
Net income (loss) | (1,343) | (119)
GridSense Inc. [Member] | Discontinued Operations [Member] |  |
Revenues |  | 212
Gross profit |  | 28
Net income (loss) | 38 | (286)
Gain on deconsolidation | 660 |
Income (loss) from discontinued operations, net of income taxes | $ 698 | $ (286)

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