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Segment Reporting - Summary of Segmented Data (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | $ 4,618 us-gaap_Revenues | $ 4,454 us-gaap_Revenues |  |
Intersegment revenues |  |  |  |
Segment gross profit | 1,519 us-gaap_GrossProfit | 1,430 us-gaap_GrossProfit |  |
Depreciation and amortization | 131 ACFN_SegmentDepreciationAndAmortization | 167 ACFN_SegmentDepreciationAndAmortization |  |
Segment net income (loss) before income taxes | (792)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes | (1,605)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes |  |
Energy & Security Sonar Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | 2,660 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember | 2,515 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember |  |
Intersegment revenues |  |  |  |
Segment gross profit | 605 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember | 686 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember |  |
Depreciation and amortization | 45 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember | 71 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember |  |
Segment net income (loss) before income taxes | (294)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember | (208)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = ACFN_EnergySecuritySonarSolutionsSegmentMember |  |
GridSense [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers |  |  | 908 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember | 963 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember
Intersegment revenues |  |  |  |
Segment gross profit |  |  | 277 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember | 185 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember
Depreciation and amortization |  |  | 57 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember | 65 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember
Segment net income (loss) before income taxes |  |  | (325)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember | (973)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = ACFN_GridSenseSegmentMember
M2M [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | 553 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember | 508 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember |  |
Intersegment revenues |  |  |  |
Segment gross profit | 340 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember | 312 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember |  |
Depreciation and amortization | 18 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember | 17 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember |  |
Segment net income (loss) before income taxes | (278)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember | (403)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = ACFN_MachineToMachineMember |  |
Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue from external customers | 497 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 468 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember |  |
Intersegment revenues |  |  |  |
Segment gross profit | 297 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 247 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember |  |
Depreciation and amortization | 11 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 14 ACFN_SegmentDepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember |  |
Segment net income (loss) before income taxes | $ 105 ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | $ (21)ACFN_SegmentNetIncomeLossBeforeIncomeTaxes / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember |  |

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- Definition Intersegment revenues. + References No definition available. + Details
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- Definition Segment depreciation and amortization + References No definition available. + Details
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- Definition Segment net income (loss) before income taxes + References No definition available. + Details
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Details
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- Details
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- Details
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