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BASIS OF PRESENTATION Schedule of Quantifying a Prior Year Misstatement (Tables) | 3 Months Ended
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Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Quantifying Prior Year Misstatements Corrected in Current Year Financial Statements [Table Text Block] | The effect of the restatement on the Company's net loss and basic and diluted loss per share for the three-month periods ended on each of March 31, June 30, and September 30, 2012, the six month period ended June 30, 2012 and the nine month period ended September 30, 2012 are shown below:
|  | Three months ended |  | Six months ended |  | Three months ended |  | Nine months ended |  | Three months ended
|  | March 31, 2012 |  | June 30, 2012 |  | September 30, 2012
Net loss attributable to Acorn Energy, Inc. shareholders - as reported |  | $ | (4,178 | ) |  | $ | (7,290 | ) |  | $ | (3,112 | ) |  | $ | (11,040 | ) |  | $ | (3,750 | )
Net effect of restatement |  | (11 | ) |  | (103 | ) |  | (92 | ) |  | (288 | ) |  | (185 | )
Net loss attributable to Acorn Energy, Inc. shareholders - restated |  | $ | (4,189 | ) |  | $ | (7,393 | ) |  | $ | (3,204 | ) |  | $ | (11,328 | ) |  | $ | (3,935 | )
Basic and diluted net loss per share attributable to Acorn Energy, Inc. shareholders - as reported |  | $ | (0.24 | ) |  | $ | (0.41 | ) |  | $ | (0.17 | ) |  | $ | (0.62 | ) |  | $ | (0.21 | )
Net effect of restatement |  | — |  |  | (0.01 | ) |  | (0.01 | ) |  | (0.01 | ) |  | (0.01 | )
Basic and diluted net loss per share attributable to Acorn Energy, Inc. shareholders - restated |  | $ | (0.24 | ) |  | $ | (0.42 | ) |  | $ | (0.18 | ) |  | $ | (0.63 | ) |  | $ | (0.22 | )

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- Definition Tabular disclosure of the nature and amount of prior period errors that had previously been considered immaterial and which are being corrected in the current fiscal year. This disclosure would also generally include when and how each error being corrected arose and assert that the errors were immaterial to the prior amounts reported. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 1.N.Q3) -URI http://asc.fasb.org/extlink&oid=6369664&loc=d3e30840-122693 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 1 -Section N + Details
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