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Commitments and Contingencies (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Office rental and automobile leasing expenses	$ 79	$ 245
Operating leases expiration dates	leases will expire on different dates from 2018 to 2019
DSIT [Member]
Office rental and automobile leasing expenses		179
Discontinued Operations [Member]
Office rental and automobile leasing expenses		$ 67

X

- Definition

Operating leases expiration dates.

+ References

No definition available.

+ Details

Name:	ACFN_OperatingLeasesExpirationDates
Namespace Prefix:	ACFN_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_CreditFacilityAxis=ACFN_DsitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementOperatingActivitiesSegmentAxis=us-gaap_SegmentDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: