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Restructing and Related Charges (Details Narrative) (USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Dec. 31, 2013
GridSense [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 38us-gaap_SeveranceCosts1 / us-gaap_RestructuringPlanAxis = ACFN_GridSenseMember
Restructuring charges payable		38us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ACFN_GridSenseMember
OmniMetrix [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges payable		237us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ACFN_OmnimetrixMember	248us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ACFN_OmnimetrixMember
Payment of lease cost		11us-gaap_PaymentsForLeasingCosts / us-gaap_RestructuringPlanAxis = ACFN_OmnimetrixMember
Expected to be paid restructuring cost date		Dec. 31, 2019
Restructuring charges included in other current liabilities		(44)us-gaap_RestructuringReserveCurrent / us-gaap_RestructuringPlanAxis = ACFN_OmnimetrixMember
Restructuring charges included in other liabilities		$ (193)us-gaap_RestructuringReserveNoncurrent / us-gaap_RestructuringPlanAxis = ACFN_OmnimetrixMember

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- Definition

Expected Restructuring Cost Date.

+ References

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- Definition

Amount of cash outflow for costs that are essential to originate the lease and would not otherwise have been incurred without the lease agreement. Amount includes, but is not limited to, cash outflows to evaluate the lessee's credit condition, guarantees, and collateral and cash outflows for costs incurred in negotiating, processing, and executing the lease agreement.

+ References

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: 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))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747



Reference 2: 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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Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 4



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-SubTopic 10

-Section 50

-Paragraph 1

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

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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

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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)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

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-Paragraph 2

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

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747



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-Subparagraph (SAB TOPIC 5.P.3)

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



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