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Segment Reporting and Geographic Information - Reconciliation of Segment Data to Consolidated Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting And Geographic Information - Reconciliation Of Segment Data To Consolidated Statement Of Operations Details |  |  |  |
Total net loss before income taxes for reportable segments | $ (6,943)ACFN_NetIncomeLossBeforeIncomeTaxesForReportableSegments |  | $ (14,071)ACFN_NetIncomeLossBeforeIncomeTaxesForReportableSegments |
Other operational segment net income (loss) before income taxes | 99 ACFN_OtherOperatingSegmentNetIncomeLossBeforeIncomeTaxes |  | (2,046)ACFN_OtherOperatingSegmentNetIncomeLossBeforeIncomeTaxes |
Segment loss before income taxes | (6,844)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes |  | (16,117)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes |
Unallocated net income (cost) of DSIT headquarters | 109 ACFN_UnallocatedDSITsegmentcosts |  | (53)ACFN_UnallocatedDSITsegmentcosts |
Unallocated net cost of corporate headquarters | (3,560)ACFN_UnallocatedCorporateSegmentCosts | [1] | (5,016)ACFN_UnallocatedCorporateSegmentCosts | [1]
Consolidated net loss before taxes on income | $ (10,295)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments |  | $ (21,186)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments |
[1] | Includes $926 and $830 of stock compensation expense for the years ending December 31, 2013 and 2014, 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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- 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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Namespace Prefix: | ACFN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Unallocated DSIT segment costs + References No definition available. + Details
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Namespace Prefix: | ACFN_
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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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