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Subsequent Events (Details Narrative) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jan. 13, 2015	Mar. 31, 2015
Write off assets	$ 101us-gaap_InventoryWriteDown	$ 163us-gaap_InventoryWriteDown
Fixed assets	1,080us-gaap_PropertyPlantAndEquipmentNet	1,146us-gaap_PropertyPlantAndEquipmentNet
GridSense [Member]
Line of credit	1,500us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = ACFN_GridSenseMember
USSI [Member]
Due to bank	1,460us-gaap_RepaymentsOfBankDebt / us-gaap_CreditFacilityAxis = ACFN_USSIMember
Percentage of bear interest at default rate	5.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_CreditFacilityAxis = ACFN_USSIMember
Line of credit	1,500us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = ACFN_USSIMember
Subsequent Event [Member]
Write off assets	4,935us-gaap_InventoryWriteDown / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Goodwill and intangibles	3,436us-gaap_IntangibleAssetsCurrent / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Fixed assets	969us-gaap_PropertyPlantAndEquipmentNet / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Bid price of common stock price per share			$ 1.00ACFN_BidPriceOfCommonStockPricePerShare / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Subsequent Event [Member] | July 13, 2015 [Member]
Bid price of common stock price per share	$ 1.00ACFN_BidPriceOfCommonStockPricePerShare / us-gaap_CreationDateAxis = ACFN_JulyThirteenTwoThousandFifteenMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Subsequent Event [Member] | GridSense [Member]
Line of credit	1,480us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = ACFN_GridSenseMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
U.S. Seismic Systems, Inc [Member] | Subsequent Event [Member]
Due to related parties				$ 1,325us-gaap_DueFromRelatedParties / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition

Bid Price of Common Stock Price Per Share.

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No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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The current portion of nonphysical assets, excluding financial assets, if these assets are classified into the current and noncurrent portions.

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Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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The cash outflow to settle a bank borrowing during the year.

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