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Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jun. 28, 2019 | Dec. 31, 2019
Statement of Cash Flows [Abstract] |  |
Offering costs | $ 210 | $ 208

X
- Definition Offering costs. + References No definition available. + Details
Name: | ACFN_OfferingCosts
Namespace Prefix: | ACFN_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration