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Equity - Summary of Warrant Activity (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Equity [Abstract] |  |
Number of shares underlying warrants, Outstanding at beginning of year | 285,281 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber | 28,750 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Number of shares underlying warrants, Granted | 2,357,142 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted | 262,281 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Number of shares underlying warrants, Exercised |  | (5,750)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Number of shares underlying warrants, Forfeited Or Expired |  |
Number of shares underlying warrants, Outstanding and exercisable at end of year | 2,642,423 ACFN_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityExercisable | 285,281 ACFN_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityExercisable
Weighted Average Exercise Price, Outstanding at beginning of year | $ 3.18 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionOutstandingWeightedAverageNumberOfShare | $ 3.68 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionOutstandingWeightedAverageNumberOfShare
Weighted Average Exercise Price, Granted | $ 1.30 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionGrantsInPeriodWeightedAverageExercisePrice | $ 3.14 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionGrantsInPeriodWeightedAverageExercisePrice
Weighted Average Exercise Price, Exercised |  | $ 3.68 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionExercisedInPeriodWeightedAverageExercisePrice
Weighted Average Exercise Price, Forfeited Or Expired |  |
Weighted Average Exercise Price, Outstanding and exercisable at end of year | $ 1.50 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionWeightedAverageExercisable | $ 3.18 ACFN_ShareBasedCompensationArrangementByShareBasedPaymetAwardNonOptionWeightedAverageExercisable

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- Definition Share based compensation arrangement by share based payment award non option equity exercisable. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based paymet award non option exercised in period weighted average exercise price. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based paymet award non option forfeited or expired in period weighted average exercise price. + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Non Option Grants In Period Weighted Average Exercise Price. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based paymet award non option outstanding weighted average number of share. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based paymet award non option weighted average exercisable. + References No definition available. + Details
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- Details
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- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of shares under non-option equity instrument agreements that were either cancelled or expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of non-option equity instruments granted to participants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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