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Consolidated Statements of Changes In Equity - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-In Capital [Member] | Warrants [Member] | Accumulated Deficit [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total Acorn Energy, Inc. Shareholders' Equity [Member] | Non-Controlling Interests [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2015 | $ 281 | $ 98,977 | $ 1,597 | $ (97,191) | $ (3,036) | $ (262) | $ 366 | $ 1,292 | $ 1,658
Balances, shares at Dec. 31, 2015 | 28,128,000 |  |  |  |  |  |  |  |
Net income (loss) |  |  |  | 145 |  |  | 145 | (264) | (119)
Differences from translation of subsidiaries' financial statements |  |  |  |  |  | 8 | 8 | (2) | 6
Conversion of loan to Common Stock (see Note 18(b)) | $ 5 | 110 |  |  |  |  | 115 |  | 115
Conversion of loan to Common Stock (see Note 18(b)), shares | 466,000 |  |  |  |  |  |  |  |
Shares issued in connection with loan from Leap Tide (see Note 5) | $ 15 | 352 |  |  |  |  | 367 |  | 367
Shares issued in connection with loan from Leap Tide (see Note 5), shares | 1,531,000 |  |  |  |  |  |  |  |
Deconsolidation of DSIT (see Note 3) |  | 242 |  |  |  |  | 242 | (371) | (129)
Accrued dividend in OmniMetrix preferred shares |  |  |  |  |  |  |  | (100) | (100)
Warrants issued |  | (3) | 3 |  |  |  |  |  |
Stock option compensation |  | 89 |  |  |  |  | 89 |  | 89
Balances at Dec. 31, 2016 | $ 301 | 99,767 | 1,600 | (97,046) | (3,036) | (254) | 1,332 | 555 | 1,887
Balances, shares at Dec. 31, 2016 | 30,125,000 |  |  |  |  |  |  |  |
Net income (loss) |  |  |  | (1,169) |  |  | (1,169) | (174) | (1,343)
Differences from translation of subsidiaries' financial statements |  |  |  |  |  |  |  |  |
Accrued dividend in OmniMetrix preferred shares |  |  |  |  |  |  |  | (100) | (100)
Stock option compensation |  | 22 |  |  |  |  | 22 |  | 22
Deconsolidation of GridSense (see Note 4) |  |  |  |  |  | 254 | 254 |  | 254
Shares issued in lieu of director fees (see Note 18(a)) | $ 2 | 30 |  |  |  |  | 32 |  | 32
Shares issued in lieu of director fees, shares (see Note 18(a)) | 177,000 |  |  |  |  |  |  |  |
Balances at Dec. 31, 2017 | $ 303 | $ 99,819 | $ 1,600 | $ (98,215) | $ (3,036) |  | $ 471 | $ 281 | $ 752
Balances, shares at Dec. 31, 2017 | 30,302,000 |  |  |  |  |  |  |  |

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