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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
	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	99ACFN_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	109ACFN_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.

X

- Definition

Net income (loss) before income taxes for reportable segments

+ References

No definition available.

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- Definition

Other operating segment net income (loss) before income taxes

+ References

No definition available.

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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.

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- Definition

Unallocated DSIT segment costs

+ References

No definition available.

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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

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