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SUBSEQUENT EVENTS GridSense Employee Incentive Plan (Details) (Subsequent Event [Member])	0 Months Ended
	Jan. 14, 2013
Subsequent Event [Member]
Subsequent Event [Line Items]
Bonus pool - GridSense Employee Incentive Plan	17.00%

X

- Definition

Bonus pool - GridSense Employee Incentive Plan

+ References

No definition available.

+ Details

Name:	acfn_BonusPoolGridsenseEmployeeIncentivePlan
Namespace Prefix:	acfn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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