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Equity - Schedule of Dividends Paid Since Approval of Quarterly Dividend (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013
Equity [Abstract] |  |  |
Regular dividend paid per share | $ 0.035 ACFN_RegularDividendPaidPerShare |  | $ 0.035 ACFN_RegularDividendPaidPerShare
Special dividend paid per share |  |  |
Total dividends paid | $ 0.035 ACFN_NetDividendsPaidPerShare |  | $ 0.035 ACFN_NetDividendsPaidPerShare
Dividend paid in cash | $ 517 us-gaap_PaymentsOfDividends |  | $ 517 us-gaap_PaymentsOfDividends
Value of dividend paid in shares under the DRIP | 117 us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan |  | 117 us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan
Total dividend paid | 634 ACFN_DividendPaidNetAmount |  | 634 ACFN_DividendPaidNetAmount
Value of share discount under the DRIP | $ 6 ACFN_DividendReinvestmentPlanDiscount |  | $ 6 ACFN_DividendReinvestmentPlanDiscount
Number of share granted under the DRIP | 18,976 us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan |  | 18,976 us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan

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- Definition Dividend Paid Net Amount. + References No definition available. + Details
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- Definition Dividend reinvestment plan discount + References No definition available. + Details
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- Definition Net Dividends Paid Per Share. + References No definition available. + Details
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- Definition Regular dividend paid per share + References No definition available. + Details
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- Definition Special dividend paid per share + References No definition available. + Details
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- Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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- Definition Value of stock issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the holder of the stock to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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