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Segment Reporting and Geographic Information - Schedule of Long Lived Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Long-lived assets	$ 18,258us-gaap_NoncurrentAssets	$ 20,789us-gaap_NoncurrentAssets
United States [Member]
Long-lived assets	442us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = ACFN_UnitedStatesMember	564us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = ACFN_UnitedStatesMember
Israel [Member]
Long-lived assets	$ 638us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = ACFN_IsraelMember	$ 582us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = ACFN_IsraelMember

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_StatementGeographicalAxis=ACFN_IsraelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=ACFN_UnitedStatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: