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Consolidated Statements of Operations - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Income Statement [Abstract] |  |
Revenue | $ 4,350 | $ 8,659
Cost of sales | 1,903 | 5,134
Gross profit | 2,447 | 3,525
Operating expenses: |  |
Research and development expenses, net | 518 | 927
Selling, general and administrative expenses | 3,840 | 5,651
Total operating expenses | 4,358 | 6,578
Operating loss | (1,911) | (3,053)
Finance expense, net | (231) | (572)
Gain on sale of interest in DSIT, net of transaction costs |  | 3,543
Loss before income taxes | (2,142) | (82)
Income tax expense | (41) | (19)
Net loss after income taxes | (2,183) | (101)
Share of income in DSIT | 450 | 268
Impairment of investment in DSIT | (308) |
Income (loss) before discontinued operations | (2,041) | 167
Income (loss) from discontinued operations, net of income taxes | 698 | (286)
Net loss | (1,343) | (119)
Non-controlling interest share of loss – continuing operations | 174 | 264
Net income (loss) attributable to Acorn Energy, Inc. shareholders. | $ (1,169) | $ 145
Basic and diluted net income (loss) per share attributable to Acorn Energy, Inc. shareholders: |  |
From continuing operations | $ (0.06) | $ 0.02
From discontinued operations | 0.02 | (0.01)
Net income (loss) per share attributable to Acorn Energy, Inc. shareholders | $ (0.04) | $ 0.01
Weighted average number of shares outstanding attributable to Acorn Energy, Inc. shareholders – basic | 29,423,000 | 28,488,000
Weighted average number of shares outstanding attributable to Acorn Energy, Inc. shareholders –diluted | 29,423,000 | 28,531,000

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