Subsequent Events	6 Months Ended
Jun. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE 13 — SUBSEQUENT EVENTS Sale of GridSense Assets On July 12, 2016, the Company and its GridSense, Inc. subsidiary entered into an Asset Purchase Agreement for, and completed, the sale of the GridSense assets to Franklin Fueling Systems, Inc., a wholly-owned subsidiary of Franklin Electric Co., Inc. for a gross sales price of $1,000. Following the sale, GridSense paid off approximately $240 of previously accrued severance and other payroll costs. The Company expects that the remaining proceeds from the sale, after transaction costs and an indemnity escrow of $100 will be allocated by an independent liquidation officer to satisfy, to the extent of the funds available, the claims of GridSense creditors, including Acorn which is GridSense’s largest creditor. The Company cannot determine with certainty the amount, if any, of these remaining proceeds that may be available to it. The Company expects to record a gain of approximately $1,000 (before transaction costs) from discontinued operations on this transaction in its third quarter report, as the value of the GridSense assets sold had previously been written down to nearly zero. Results from the Annual Meeting of the Company The Annual Meeting of Stockholders of the Company Acorn Energy, Inc. was held July 21, 2016. At the meeting, the stockholders approved an amendment to Company’s restated certificate of incorporation to authorize a reverse split of the Company’s common stock at any time prior to July 21, 2017, at a ratio between one-for-ten and one-for-twenty, if and as determined by the Company’s Board of Directors.

Subsequent Events

6 Months Ended

Jun. 30, 2016

NOTE 13 — SUBSEQUENT EVENTS

Sale of GridSense Assets

On July 12, 2016, the Company and its GridSense, Inc. subsidiary entered into an Asset Purchase Agreement for, and completed, the sale of the GridSense assets to Franklin Fueling Systems, Inc., a wholly-owned subsidiary of Franklin Electric Co., Inc. for a gross sales price of $1,000. Following the sale, GridSense paid off approximately $240 of previously accrued severance and other payroll costs. The Company expects that the remaining proceeds from the sale, after transaction costs and an indemnity escrow of $100 will be allocated by an independent liquidation officer to satisfy, to the extent of the funds available, the claims of GridSense creditors, including Acorn which is GridSense’s largest creditor. The Company cannot determine with certainty the amount, if any, of these remaining proceeds that may be available to it. The Company expects to record a gain of approximately $1,000 (before transaction costs) from discontinued operations on this transaction in its third quarter report, as the value of the GridSense assets sold had previously been written down to nearly zero.

Results from the Annual Meeting of the Company

The Annual Meeting of Stockholders of the Company Acorn Energy, Inc. was held July 21, 2016. At the meeting, the stockholders approved an amendment to Company’s restated certificate of incorporation to authorize a reverse split of the Company’s common stock at any time prior to July 21, 2017, at a ratio between one-for-ten and one-for-twenty, if and as determined by the Company’s Board of Directors.