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Accrued Severance, Severance Assets and Retirement Plans (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Amounts deposited in dedicated funds	$ 138	$ 375
Percentage on contribution of employee salaries	3.00%
Expense related to employer	$ 45	100
Employer expense related to discontinued operations	$ 4	$ 50

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- Definition

Amounts deposited in dedicated funds.

+ References

No definition available.

+ Details

Name:	ACFN_AmountsDepositedInDedicatedFunds
Namespace Prefix:	ACFN_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Employer Expense Related To Discontinued Operations.

+ References

No definition available.

+ Details

Name:	ACFN_EmployerExpenseRelatedToDiscontinuedOperations
Namespace Prefix:	ACFN_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Expense related to the employer portion.

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No definition available.

+ Details

Name:	ACFN_ExpenseRelatedToEmployerPortion
Namespace Prefix:	ACFN_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage On Contribution Of Employee Salaries.

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No definition available.

+ Details

Name:	ACFN_PercentageOnContributionOfEmployeeSalaries
Namespace Prefix:	ACFN_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration