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Discontinued Operations - Schedule of Financial Information (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Revenues | $ 4,761 | $ 3,710
Gross profit (loss) | 1,631 | 1,242
Net loss | (3,026) | (2,934)
Net loss attributable to Acorn Energy Inc. | (2,975) | (2,769)
GridSense [Member] | Discontinued Operations [Member] |  |
Revenues | 143 | 908
Gross profit (loss) | (30) | 277
Net loss | $ (1,386) | $ (325)
U.S. Seismic Systems, Inc [Member] | Discontinued Operations [Member] |  |
Revenues |  |
Gross profit (loss) |  | $ (90)
Net loss |  | (1,152)
Net loss attributable to non-controlling interests |  | 145
Net loss attributable to Acorn Energy Inc. |  | $ (1,007)

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