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Accrued Severance, Severance Assets and Retirement Plans (Details Narrative) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Severance pay contributions	$ 411us-gaap_SeveranceCosts1	$ 434us-gaap_SeveranceCosts1
Percentage on contribution of employee salaries	3.00%ACFN_PercentageOnContributionOfEmployeeSalaries
Expense related to employer	218us-gaap_CostsAndExpensesRelatedParty	200us-gaap_CostsAndExpensesRelatedParty
Employer expense related to discontinued operations	125ACFN_EmployerExpenseRelatedToDiscontinuedOperations	81ACFN_EmployerExpenseRelatedToDiscontinuedOperations
GridSense [Member]
Severance pay contributions			10us-gaap_SeveranceCosts1 / us-gaap_CreditFacilityAxis = ACFN_GridSenseMember	92us-gaap_SeveranceCosts1 / us-gaap_CreditFacilityAxis = ACFN_GridSenseMember
GridSense [Member] | Minimum [Member]
Percentage on contribution of employee salaries	9.00%ACFN_PercentageOnContributionOfEmployeeSalaries / us-gaap_CreditFacilityAxis = ACFN_GridSenseMember / us-gaap_RangeAxis = us-gaap_MinimumMember
December 31, 2015 [Member]
Severance pay obligations	$ 337ACFN_SeverancePayObligations / us-gaap_CreationDateAxis = ACFN_DecemberThirtyFirstTwoThousandFifiteenMember

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+ References

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- Definition

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+ References

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- Definition

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+ References

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.P.3)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4



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-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(10)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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