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Segment Reporting - Reconciliation of Segment Data to Consolidated Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Segment Reporting [Abstract] |  |  |  |
Total net loss before income taxes for reportable segments | $ (897)ACFN_NetIncomeLossBeforeIncomeTaxesForReportableSegments |  | $ (1,584)ACFN_NetIncomeLossBeforeIncomeTaxesForReportableSegments |
Other operational segment net income (loss) before income taxes | 105 ACFN_OtherOperatingSegmentNetIncomeLossBeforeIncomeTaxes |  | (21)ACFN_OtherOperatingSegmentNetIncomeLossBeforeIncomeTaxes |
Total segment net loss before income taxes | (792)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes |  | (1,605)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes |
Unallocated cost of corporate headquarters* | (1,033)ACFN_UnallocatedCorporateSegmentCosts | [1] | (1,043)ACFN_UnallocatedCorporateSegmentCosts | [1]
Unallocated benefit (cost) of DSIT headquarters | 10 ACFN_UnallocatedDSITsegmentcosts |  | (26)ACFN_UnallocatedDSITsegmentcosts |
Consolidated loss before income taxes | $ (1,815)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments |  | $ (2,674)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments |
[1] | Includes stock compensation expense of $310 and $208 for the three month periods ended March 31, 2014 and 2015, respectively.

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- Definition Net income (loss) before income taxes for reportable segments + References No definition available. + Details
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- Definition Other operating segment net income (loss) before income taxes + References No definition available. + Details
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- Definition Segment net income (loss) before income taxes + References No definition available. + Details
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- Definition Unallocated corporate segment costs + References No definition available. + Details
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- Definition Unallocated DSIT segment costs + References No definition available. + Details
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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Details
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