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Investments in Subsidiaries (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended	0 Months Ended				1 Months Ended	5 Months Ended	0 Months Ended	6 Months Ended	0 Months Ended
	Dec. 31, 2013	Dec. 19, 2013	Aug. 21, 2013	May 31, 2013	Feb. 28, 2013	Aug. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Jul. 02, 2013	Dec. 31, 2014	Nov. 30, 2014
Revenues from product line	$ 152ACFN_RevenuesFromProductLine
GridSense [Member]
Proceeds from sale of product line		281ACFN_ProceedsFromSaleOfProductLine / us-gaap_BusinessAcquisitionAxis = ACFN_GridSenseMember
Gain on sale of product line		116us-gaap_GainLossOnSaleOfOtherInvestments / us-gaap_BusinessAcquisitionAxis = ACFN_GridSenseMember
U.S. Seismic Systems, Inc [Member]
Common stock owned						9,376,401us-gaap_StockIssuedDuringPeriodSharesAcquisitions / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Percentage of conversion stock						95.70%ACFN_PercentageOfConversionStock / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Percentage fully diluted ownership						88.40%ACFN_FullyDilutedOwnershipPercentage / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Payment of preferred stock			1,000ACFN_PaymentOfPreferredStock / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember	2,500ACFN_PaymentOfPreferredStock / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember	2,500ACFN_PaymentOfPreferredStock / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Invested in common shares							7,584ACFN_InvestedInCommonShares / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Cash investment	5,355ACFN_CashInvestment / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember						5,355ACFN_CashInvestment / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Acorn common shares							2,229ACFN_CommonSharesInvestment / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Additional purchase value of preferred stock							16,750ACFN_AdditionalPurchaseValueOfPreferredStock / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Lent additional loan	1,355us-gaap_ShortTermBorrowings / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember						1,355us-gaap_ShortTermBorrowings / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember				10,058us-gaap_ShortTermBorrowings / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Loan bears interest rate											8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
U.S. Seismic Systems, Inc [Member] | Secured Promissory Notes [Member]
Loan bears interest rate												8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
Processing service value												240ACFN_ProcessingServiceInvestmentValue / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember
U.S. Seismic Systems, Inc [Member] | Series A 1 Preferred Stock [Member]
Common stock owned								4,208,745us-gaap_StockIssuedDuringPeriodSharesAcquisitions / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember / us-gaap_StatementEquityComponentsAxis = ACFN_SeriesAOnePreferredStockMember
Common stock representing shares								6,017,690ACFN_CommonStockRepresentingShares / dei_LegalEntityAxis = ACFN_USSeismicSystemsIncMember / us-gaap_StatementEquityComponentsAxis = ACFN_SeriesAOnePreferredStockMember
Acorn [Member] | Secured Promissory Notes [Member]
Loan bears interest rate											8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_AcornMember
Provision for secured promissory note									640ACFN_ProvisionForSecuredPromissoryNote / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_AcornMember
Secured promissory note lent to channel partner									640ACFN_SecuredPromissoryNoteLentToRelatedParties / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_AcornMember
Provision for secured promissory note interest accrued									9ACFN_ProvisionForSecuredPromissoryNoteInterestAccrued / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_AcornMember
Received cash from the partner												400us-gaap_RelatedPartyTransactionDueFromToRelatedParty / us-gaap_DebtInstrumentAxis = ACFN_SecuredPromissoryNotesMember / dei_LegalEntityAxis = ACFN_AcornMember
DSIT Solutions, Ltd. [Member]
Additional purchase value of preferred stock	1,400ACFN_AdditionalPurchaseValueOfPreferredStock / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember									800ACFN_AdditionalPurchaseValueOfPreferredStock / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember
Adjustments of non controlling interests	202ACFN_AdjustmentsOfNonControllingInterests / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember
Converted prior loan										800us-gaap_ConversionOfStockAmountConverted1 / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember
Converted advances and loans										2,800ACFN_ConvertedAdvancesAndLoans / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember
Fund payment of remaining	$ 1,400ACFN_FundPaymentOfRemaining / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember						$ 1,400ACFN_FundPaymentOfRemaining / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember
Percentage of ownership											88.30%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember
Percentage of ownership diluted	77.40%ACFN_PercentageOfOwnershipDiluted / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember						77.40%ACFN_PercentageOfOwnershipDiluted / dei_LegalEntityAxis = ACFN_DSITSolutionsLtdMember

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Cash Investment.

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Common Shares Investment.

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Percentage Of Ownership Diluted.

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Processing Service Investment Value.

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The value of the stock converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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