Basis of Presentation and Liquidity	3 Months Ended
Mar. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation and Liquidity	NOTE 1— BASIS OF PRESENTATION AND LIQUIDITY The accompanying unaudited condensed consolidated financial statements of Acorn Energy, Inc. and its subsidiaries (the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Article 8 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete consolidated financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the three month period ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016. All dollar amounts in the notes to the condensed consolidated financial statements are in thousands except for per share data. Certain reclassifications have been made to the Company’s condensed consolidated financial statements for the three month period ended March 31, 2015 to conform to the current period’s condensed consolidated financial statement presentation. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015. The Company currently does not have sufficient cash flow for the next twelve months. As of March 31, 2016, the Company had less than $50 of non-escrow corporate cash and cash equivalents. On April 21, 2016, the Company closed on the sale of a portion of its interests in DSIT and received gross proceeds of $4,913 before escrow ($579), Israeli withholding taxes ($266) and fees (see Note 12 – Subsequent Events). On April 29, 2016, the Company repaid all principal ($2,000) and interest ($15) due to Leap Tide as well as $275 of principal and $41 of interest due to directors who had lent the Company money in the first quarter of 2016 (see Note 12 - Subsequent Events). Remaining cash after these debt repayments will be used to support the corporate cash needs of Acorn and its subsidiaries to the extent possible. Additional liquidity will be necessary to finance the operating activities of Acorn and the operations of its OmniMetrix subsidiary. The Company will continue to pursue sources of funding, which may include loans from related and/or non-related parties, a sale or partial sale of one or more of its companies, finding a strategic partner for one or more of the Company’s businesses or equity financings. There can be no assurance additional funding will be available at terms acceptable to the Company. There can be no assurance that we will be able to successfully utilize any of these possible sources to provide additional liquidity. If additional funding is not available in sufficient amounts, Acorn will not be able to fund its own corporate activities during the next twelve months, which could materially impact its ability to continue operations, and the Company may not be able to fund OmniMetrix as it has historically, which could materially impact its carrying value. As such, these factors raise substantial doubt as to the Company’s ability to continue as a going concern.

Basis of Presentation and Liquidity

3 Months Ended

Mar. 31, 2016

NOTE 1— BASIS OF PRESENTATION AND LIQUIDITY

The accompanying unaudited condensed consolidated financial statements of Acorn Energy, Inc. and its subsidiaries (the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Article 8 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete consolidated financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the three month period ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016. All dollar amounts in the notes to the condensed consolidated financial statements are in thousands except for per share data.

Certain reclassifications have been made to the Company’s condensed consolidated financial statements for the three month period ended March 31, 2015 to conform to the current period’s condensed consolidated financial statement presentation. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015.

The Company currently does not have sufficient cash flow for the next twelve months. As of March 31, 2016, the Company had less than $50 of non-escrow corporate cash and cash equivalents. On April 21, 2016, the Company closed on the sale of a portion of its interests in DSIT and received gross proceeds of $4,913 before escrow ($579), Israeli withholding taxes ($266) and fees (see Note 12 – Subsequent Events). On April 29, 2016, the Company repaid all principal ($2,000) and interest ($15) due to Leap Tide as well as $275 of principal and $41 of interest due to directors who had lent the Company money in the first quarter of 2016 (see Note 12 - Subsequent Events). Remaining cash after these debt repayments will be used to support the corporate cash needs of Acorn and its subsidiaries to the extent possible.

Additional liquidity will be necessary to finance the operating activities of Acorn and the operations of its OmniMetrix subsidiary. The Company will continue to pursue sources of funding, which may include loans from related and/or non-related parties, a sale or partial sale of one or more of its companies, finding a strategic partner for one or more of the Company’s businesses or equity financings. There can be no assurance additional funding will be available at terms acceptable to the Company. There can be no assurance that we will be able to successfully utilize any of these possible sources to provide additional liquidity. If additional funding is not available in sufficient amounts, Acorn will not be able to fund its own corporate activities during the next twelve months, which could materially impact its ability to continue operations, and the Company may not be able to fund OmniMetrix as it has historically, which could materially impact its carrying value. As such, these factors raise substantial doubt as to the Company’s ability to continue as a going concern.