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Goodwill and Intangible Assets (Details Narrative) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Goodwill impairment charge | $ 1,773 us-gaap_GoodwillImpairedAdjustmentToInitialEstimateAmount |  | $ 1,930 us-gaap_GoodwillImpairedAdjustmentToInitialEstimateAmount
Amortization of intangible assets |  | 282 us-gaap_AmortizationOfIntangibleAssets | 699 us-gaap_AmortizationOfIntangibleAssets
Amortization expense discontinued operations |  | 150 ACFN_AmortizationExpenseDiscontinuedOperations |
Amortization expense of intangible assets, 2015 | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |
Amortization expense of intangible assets, 2016 | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |
Amortization expense of intangible assets, 2017 | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |
Amortization expense of intangible assets, 2018 | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |
Amortization expense of intangible assets, 2019 | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive | 191 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive |
M2M Segment [Member] |  |  |
Goodwill impairment charge |  |  | 1,517 us-gaap_GoodwillImpairedAdjustmentToInitialEstimateAmount / us-gaap_StatementBusinessSegmentsAxis = ACFN_MTwoMSegmentMember
Impairment of intangible |  |  | 2,708 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = ACFN_MTwoMSegmentMember
PM [Member] |  |  |
Goodwill impairment charge |  |  | 413 us-gaap_GoodwillImpairedAdjustmentToInitialEstimateAmount / us-gaap_StatementBusinessSegmentsAxis = ACFN_PipelineMonitoringMember
Impairment of intangible |  |  | 977 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill / us-gaap_StatementBusinessSegmentsAxis = ACFN_PipelineMonitoringMember
Customer Relationship Intangible Asset [Member] |  |  |
Impairment of intangible |  |  | $ 1,116 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ACFN_CustomerRelationshipIntangibleAssetMember

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- Definition Amortization expense discontinued operations + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition The amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 35 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=35740277&loc=d3e12323-109265 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
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