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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Warrants [Member] | Accumulated Deficit [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income [Member] | Total Acorn Energy, Inc. Shareholders' Equity [Member] | Non-controlling Interests [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2009 | $ (36,098) |  | $ (132) |  | $ (58,373) |  | $ (290) | $ 23,343 | $ (4,827) | $ (152) | $ (30,777) | $ (5,321)
Balances (in shares) at Dec. 31, 2009 |  |  | 13,249,000 |  |  |  |  |  |  |  |  |
Treasury Stock Reissued at Lower than Repurchase Price | 438 |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations | (7,781) |  | 0 |  | 0 |  | 0 | (7,186) | 0 | 0 | (7,186) | (595)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest | (17,969) |  | 0 |  | 0 |  | 0 | (17,902) | 0 | 0 | (17,902) | (67)
Differences from translation of subsidiaries' financial statements | 871 |  | 0 |  | 0 |  | 0 | 0 | 0 | 871 | 871 | 0
Issuance by CoaLogix of CoaLogix shares to non-controlling interests | 3,010 |  | 0 |  | 587 |  | 0 | 0 | 0 | 0 | 587 | 2,423
Stock Issued During Period, Shares, New Issues |  |  | 2,232,000 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues | 11,467 |  | 22 |  | 11,445 |  | 0 | 0 | 0 | 0 | 11,467 | 0
Stock Issued During Period, Shares, Acquisitions |  |  | 1,000,000 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions | 5,640 |  | 10 |  | 5,630 |  | 0 | 0 | 0 | 0 | 5,640 | 0
Shares issued in the acquisition of GridSense - shares |  |  | 356,000 |  |  |  |  |  |  |  |  |
Shares issued in the acquisition of GridSense | 1,867 |  | 4 |  | 1,863 |  | 0 | 0 | 0 | 0 | 1,867 | 0
treasury shares issued in acquisition | 0 |  | 0 |  |  |  | 0 | 0 |  | 0 | 0 | 0
Issuance of treasury shares in exercise of USSI option | 1,791 |  |  |  | (1,791) | [1] |  |  | 1,791 |  |  |
Non Controlling Interests Acquired in Acquisition | 3,600 |  | 0 |  | 0 |  | 0 | 0 | 0 | 0 | 0 | 3,600
Adjustment of non-controlling interests following additional investment by the Company | 0 |  | 0 |  | 2,224 |  | 0 | 0 | 0 | 0 | 2,224 | (2,224)
Shares issued in December capital raise, net of transaction costs -shares |  |  | 1,150,000 |  |  |  |  |  |  |  |  |
Shares issued in December capital raise, net of transaction costs - value | 3,709 |  | 11 |  | 3,545 |  | 153 | 0 | 0 | 0 | 3,709 | 0
Stock option compensation | 690 |  | 0 |  | 690 |  | 0 | 0 | 0 | 0 | 690 | 0
Stock Option Compensation of Subsidiaries | 779 |  | 0 |  | 0 |  | 0 | 0 | 0 | 0 | 0 | 779
Deconsolidation, Gain (Loss), Amount | (386) |  | 0 |  | 795 |  | 0 | 0 | 0 | (386) | 409 | (795)
Stockholders' Equity, Other | 62 |  | 0 |  | 0 |  | 0 | 0 | 0 | 0 | 0 | 62
Exercise of options | 220 |  | 1 |  | 235 |  | (16) | 0 | 0 | 0 | 220 | 0
Exercised | 67,500 | [2] | 81,000 |  |  |  |  |  |  |  |  |
Balances at Dec. 31, 2010 | (41,877) |  | (180) |  | (83,596) |  | (427) | 48,431 | (3,036) | (637) | (33,373) | (8,504)
Balances (in shares) at Dec. 31, 2010 |  |  | 18,068,000 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations | 5,199 |  | 0 |  | 0 |  | 0 | 5,748 | 0 | 0 | 5,748 | (549)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest | 29,121 |  | 0 |  | 0 |  | 0 | 29,661 | 0 | 0 | 29,661 | (540)
Differences from translation of subsidiaries' financial statements | (168) |  | 0 |  | 0 |  | 0 | 0 | 0 | (152) | (152) | (16)
Dividends | (1,490) |  | 0 |  | (1,490) |  | 0 | 0 | 0 | 0 | (1,490) | 0
Stock Issued During Period, Shares, Dividend Reinvestment Plan | 0 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Dividend Reinvestment Plan | 0 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues | 1 |  |  |  |  |  |  |  |  |  |  |
Adjustment of non-controlling interests following additional investment by the Company | 0 |  | 0 |  | 600 |  | 0 | 0 | 0 | 0 | 600 | (600)
Stock option compensation | 406 |  | 0 |  | 406 |  | 0 | 0 | 0 | 0 | 406 | 0
Stock Option Compensation of Subsidiaries | 176 |  | 0 |  | 0 |  | 0 | 0 | 0 | 0 | 0 | 176
Deconsolidation, Gain (Loss), Amount | (5,896) |  | 0 |  | 1,193 |  | 0 | 0 | 0 | 0 | 1,193 | (7,089)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |  |  | 26,000 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 101 |  | 0 | [3] | 101 |  | 0 | 0 | 0 | 0 |  | 0
Stockholders' Equity, Other | 30 |  | 0 |  | 0 |  | 0 | 0 | 0 | 0 | 0 | 30
Exercise of options | 211 |  | 3 |  | 208 |  | 0 | 0 | 0 | 0 | 211 | 0
Exercised | 231,831 | [2] | 232,000 |  |  |  |  |  |  |  |  |
Balances at Dec. 31, 2011 | (69,567) |  | (183) |  | (84,614) |  | (427) | 13,022 | (3,036) | (485) | (69,651) | 84
Balances (in shares) at Dec. 31, 2011 |  |  | 18,326,000 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations | (17,735) |  | 0 |  | 0 |  | 0 | (16,711) | 0 | 0 | (16,711) | (1,024)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest | 0 |  |  |  |  |  |  |  |  |  |  |
Differences from translation of subsidiaries' financial statements | 235 |  | 0 |  | 0 |  | 0 | 0 | 0 | 231 | 231 |
Dividends | (2,507) |  | 0 |  | (2,507) |  | 0 | 0 | 0 | 0 | (2,507) | 0
Stock Issued During Period, Shares, Dividend Reinvestment Plan | 22,734 |  | 23,000 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Dividend Reinvestment Plan | 175 |  | 0 |  | 175 |  | 0 | 0 | 0 | 0 | 175 | 0
Stock Issued During Period, Value, New Issues | 1 |  |  |  |  |  |  |  |  |  |  |
Adjustment of non-controlling interests following additional investment by the Company | 0 |  | 0 |  | (1,067) |  | 0 | 0 | 0 | 0 | (1,067) | 1,067
Stock option compensation | 532 |  | 0 |  | 532 |  | 0 | 0 | 0 | 0 | 532 | 0
Stock Option Compensation of Subsidiaries | 323 |  | 0 |  | 0 |  | 0 | 0 | 0 | 0 | 0 | 323
Exercise of options | 1,355 |  | 5 |  | 1,722 |  | (372) | 0 | 0 | 0 | 1,355 | 0
Exercised | 252,453 | [2] | 522,000 |  |  |  |  |  |  |  |  |
Balances at Dec. 31, 2012 | $ (51,945) |  | $ (188) |  | $ (83,469) |  | $ (55) | $ 29,733 | $ (3,036) | $ (716) | $ (51,659) | $ (286)
Balances (in shares) at Dec. 31, 2012 |  |  | 18,871,000 |  |  |  |  |  |  |  |  |
[1] | Includes approximately $438 of a gain on reissuance.
[2] | All shares issued in connection with option exercises were newly issued shares.
[3] | * Less than

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