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ACCRUED SEVERANCE AND SEVERANCE ASSETS Accrued Severance and Severance Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Severance pay contributions to dedicated funds	$ 347	$ 322	$ 285
Severance pay contributions to funds expected in next fiscal year	$ 380

X

- Definition

Severance pay contributions to dedicated funds

+ References

No definition available.

+ Details

Name:	acfn_SeverancePayContributionsToDedicatedFunds
Namespace Prefix:	acfn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Severance pay contributions to funds expected in next fiscal year

+ References

No definition available.

+ Details

Name:	acfn_SeverancePayContributionsToFundsExpectedInNextFiscalYear
Namespace Prefix:	acfn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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