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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Warranty Provision (Details) | 12 Months Ended
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Dec. 31, 2012
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Approximate term of the product/project warranty | 1 year
Period (in years) of warranty granted to company's products/projects, maximum | 2 years

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- Definition Approximate term of the product/project warranty + References No definition available. + Details
Name: | acfn_ApproximateTermOfProductOrProjectWarranty
Namespace Prefix: | acfn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period (in years) of warranty granted to company's products/projects, maximum + References No definition available. + Details
Name: | acfn_PeriodInYearsOfWarrantyGrantedToCompanysProductsOrProjectsMaximum
Namespace Prefix: | acfn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | acfn_SummaryOfSignificantAccountingPoliciesAbstract
Namespace Prefix: | acfn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration