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Bank Debt and Other Debt (Details Narrative) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Jul. 31, 2014
Dec. 31, 2014
Dec. 31, 2009
Borrowed against certain accounts receivable balances $ 262ACFN_BorrowedAgainstCertainAccountsReceivableBalances        
Line of credits additional amount 3,147us-gaap_ProceedsFromLinesOfCredit 1,143us-gaap_ProceedsFromLinesOfCredit      
Israeli Bank One [Member]          
Maximum balance of lines of credit 550us-gaap_LineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_IsraeliBankOneMember		     550us-gaap_LineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_IsraeliBankOneMember		  
Line of credit, expiration date 1 Dec. 31, 2015        
Israeli Bank Two [Member]          
Maximum balance of lines of credit 1,650us-gaap_LineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_IsraeliBankTwoMember		     1,650us-gaap_LineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_IsraeliBankTwoMember		  
Local Bank [Member]          
Utilized portion of line of credit 1,480ACFN_UtilizedPortionOfLineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_LocalBankMember		 1,460ACFN_UtilizedPortionOfLineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_LocalBankMember		   1,480ACFN_UtilizedPortionOfLineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_LocalBankMember		  
Israeli CPI [Member]          
Term loan, interest rate     1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CounterpartyNameAxis
= ACFN_IsraeliCPIMember		    
DSIT [Member]          
Utilized portion of line of credit 2,169ACFN_UtilizedPortionOfLineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		     2,169ACFN_UtilizedPortionOfLineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		  
Line of credit facility, interest rate per annum 3.60%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		        
Israel prime rate 1.75%ACFN_BankPrimeRate
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		 2.50%ACFN_BankPrimeRate
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		      
Loan amount         530us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember
Interest rate on loan         0.90%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember
Proceeds loan     1,000us-gaap_ProceedsFromBankDebt
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		    
Repayment of debt   143us-gaap_RepaymentsOfDebt
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		 11us-gaap_RepaymentsOfDebt
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		    
Proceeds from loans     292us-gaap_ProceedsFromLoans
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		    
Long-term bank debt     129us-gaap_LongTermLineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		    
Other long-term liabilities     76us-gaap_OtherLongTermDebt
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		    
DSIT [Member] | Two Israeli Bank [Member]          
Maximum balance of lines of credit 2,200us-gaap_LineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_TwoIsraeliBankMember
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		     2,200us-gaap_LineOfCredit
/ us-gaap_CounterpartyNameAxis
= ACFN_TwoIsraeliBankMember
/ us-gaap_CreditFacilityAxis
= ACFN_DsitMember		  
Israeli Prime Rate Plus [Member]          
Interest rate above Israel prime rate 1.80%ACFN_InterestRateAbovePrimeRate
/ us-gaap_CreditFacilityAxis
= ACFN_IsraeliPrimeRatePlusMember		        
GridSense [Member]          
Maximum balance of lines of credit 1,500us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		     1,500us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		  
Line of credit, expiration date 1       Jun. 24, 2015  
Line of credit facility, interest rate per annum       32.50%us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		  
Percentage of borrow against certain accounts receivable       80.00%ACFN_PercentageOfBorrowAgainstCertainAccountsReceivable
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		  
Line of credit variable interest rate above prime rate      

Advances from the line-of-credit bears interest at a variable annual interest rate equal to the greater of 3.25% above the Prime Rate in effect (3.25% at December 31, 2013) or 6.50%.

  
Increase in line of credit       379us-gaap_LineOfCreditFacilityIncreaseDecreaseForPeriodNet
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		  
Borrowed against certain accounts receivable balances       958ACFN_BorrowedAgainstCertainAccountsReceivableBalances
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		  
Line of credits additional amount       750us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_GridSenseMember		  
USSI [Member]          
Maximum balance of lines of credit $ 1,500us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_USSIMember		     $ 1,500us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= ACFN_USSIMember		  
Line of credit, expiration date 1 Jan. 20, 2015        
Line of credit variable interest rate above prime rate

Advances from the line-of-credit bears interest at a variable annual interest rate equal to the greater of 1.0% above the Prime Rate in effect (3.25% at December 31, 2013 and 2014) or 6.50%. Amounts with respect to USSI are included in Current liabilities of discontinued operations (see Notes 3 and 20).