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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, 2014 | $ 272 | $ 97,607 | $ 1,641 | $ (86,592) | $ (3,036) | $ (212) | $ 9,680 | $ (3,287) | $ 6,393
Balances, shares at Dec. 31, 2014 | 27,278,000 |  |  |  |  |  |  |  |
Net loss |  |  |  | (10,599) |  |  | (10,599) | (203) | (10,802)
Differences from translation of subsidiaries' financial statements |  |  |  |  |  | (50) | (50) | 14 | (36)
Deconsolidation of USSI (see Note 4(b)) |  | 541 |  |  |  |  | 541 | 3,700 | 4,241
Expiration of warrants |  | 44 | (44) |  |  |  |  |  |
Initial shares in Leap Tide transaction (see Note 5) | $ 9 | 153 |  |  |  |  | 162 |  | 162
Initial shares in Leap Tide transaction (see Note 5), shares | 850,000 |  |  |  |  |  |  |  |
Reversal of adjustment for insufficient authorized shares |  | 50 |  |  |  |  | 50 |  | 50
Investment in OmniMetrix preferred shares |  |  |  |  |  |  |  | 1,000 | 1,000
Accrued dividend in OmniMetrix preferred shares |  |  |  |  |  |  |  | (15) | (15)
Stock option compensation |  | 582 |  |  |  |  | 582 |  | 582
Stock option compensation of subsidiaries |  |  |  |  |  |  |  | 83 | 83
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 loss |  |  |  | 145 |  |  | 145 | (264) | (119)
Differences from translation of subsidiaries' financial statements |  |  |  |  |  | 8 | 8 | (2) | 6
Accrued dividend in OmniMetrix preferred shares |  |  |  |  |  |  |  | (100) | (100)
Stock option compensation |  | 89 |  |  |  |  | 89 |  | 89
Deconsolidation of DSIT (see Note 3) |  | 242 |  |  |  |  | 242 | (371) | (129)
Conversion of loan to Common Stock (see Note 19) | $ 5 | 110 |  |  |  |  | 115 |  | 115
Conversion of loan to Common Stock (see Note 19), 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 |  |  |  |  |  |  |  |
Warrants issued |  | (3) | 3 |  |  |  |  |  |
Balances at Dec. 31, 2016 | $ 301 | $ 99,917 | $ 1,600 | $ (97,196) | $ (3,036) | $ (254) | $ 1,332 | $ 555 | $ 1,887
Balances, shares at Dec. 31, 2016 | 30,125,000 |  |  |  |  |  |  |  |

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