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SELECTED STATEMENTS OF OPERATIONS DATA (Narrative) ( Details) | 12 Months Ended
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Dec. 31, 2014 item | Dec. 31, 2013 item | Dec. 31, 2012
SELECTED STATEMENTS OF OPERATIONS DATA [Abstract] |  |  |
Number of reportable segments | 1 us-gaap_NumberOfReportableSegments |  |
Segment information and revenues from principal customers: |  |  |
Percent of total revenues benchmark |  |  | 10.00%rdcm_ConcentrationRiskRevenuesFromSignificantCustomersThresholdForDisclosurePercentOfTotalRevenues
Number of customers exceeding threshold | 3 rdcm_ConcentrationRiskRevenueFromSignificantCustomersNumberOfCustomersExceedingThreshold | 2 rdcm_ConcentrationRiskRevenueFromSignificantCustomersNumberOfCustomersExceedingThreshold |
Brazil [Member] |  |  |
Segment information and revenues from principal customers: |  |  |
Single customer purchases percent of total revenues | 22.20%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = country_BR | 10.70%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = country_BR |
Philippines [Member] |  |  |
Segment information and revenues from principal customers: |  |  |
Single customer purchases percent of total revenues | 14.90%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = country_PH | 15.50%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = country_PH |
Israel [Member] |  |  |
Segment information and revenues from principal customers: |  |  |
Single customer purchases percent of total revenues | 11.70%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = country_IL |  |

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- Definition Number of customers whose purchases, as a percent of total revenues, exceeded the threshold. + References No definition available. + Details
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- Definition The percent of revenues from a single customer considered a threshold for disclosure. + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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