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Summary of Significant Accounting Policies (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Customers	Dec. 31, 2013
Allowance for doubtful accounts	$ 143us-gaap_AllowanceForDoubtfulAccountsReceivable	$ 8us-gaap_AllowanceForDoubtfulAccountsReceivable
Increased (decreased) operating income	1,152ACFN_IncreaseDecreaseOperatingIncome	824ACFN_IncreaseDecreaseOperatingIncome
Increased (decreased) basic per share	$ 0.05ACFN_IncreaseDecreaseEarningsPerShareBasic	$ 0.04ACFN_IncreaseDecreaseEarningsPerShareBasic
Cash	5,938us-gaap_Cash
Percentage of accounts receivable	35.00%ACFN_PercentageOfAccountsReceivable
Percentage of unbilled revenue	64.00%ACFN_PercentageOfUnbilledRevenue
Number of customers concentration of receivables	2ACFN_NumberOfCustomersConcentrationOfReceivables
Fair Value, Concentration of Risk, Unbilled Revenue - number of customers	3ACFN_FairValueConcentrationOfRiskUnbilledRevenueNumberOfCustomers
Advertising expenses	26us-gaap_AdvertisingExpense	256us-gaap_AdvertisingExpense
Weighted average number of options and warrants	2,386,000ACFN_WeightedAverageAntidilutiveNumberOfOptionsAndWarrants	1,452,000ACFN_WeightedAverageAntidilutiveNumberOfOptionsAndWarrants
Trade Accounts Receivable [Member]
Charged expense	$ 142ACFN_TradeAccountsReceivableChargedToExpense / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_TradeAccountsReceivableMember	$ 8ACFN_TradeAccountsReceivableChargedToExpense / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_TradeAccountsReceivableMember
Subsidiaries [Member]
Percentage of controlled interest	50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = us-gaap_SubsidiariesMember

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Weighted Average Antidilutive Number Of Options And Warrants.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 35

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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