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SELECTED STATEMENTS OF OPERATIONS DATA (Schedule of Revenues From Sales to Unaffiliated Customers) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 23,636 us-gaap_Revenues | $ 20,482 us-gaap_Revenues | $ 15,786 us-gaap_Revenues
North America [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,922 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_NorthAmericaMemberExtendedMember | 1,687 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_NorthAmericaMemberExtendedMember | 3,850 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_NorthAmericaMemberExtendedMember
Europe [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 3,189 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_EuropeMemberExtendedMember | 4,044 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_EuropeMemberExtendedMember | 2,970 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_EuropeMemberExtendedMember
Asia (Excluding Philippines) [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 847 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_AsiaMemberExtendedMember | 435 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_AsiaMemberExtendedMember | 1,534 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_AsiaMemberExtendedMember
Philippines [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 3,544 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = country_PH | 3,173 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = country_PH | 1,292 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = country_PH
South America (Excluding Brazil) [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 4,235 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_SouthAmericaExcludingBrazilMember | 4,579 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_SouthAmericaExcludingBrazilMember | 2,848 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = rdcm_SouthAmericaExcludingBrazilMember
Brazil [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 6,448 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = country_BR | 5,469 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = country_BR | 1,896 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = country_BR
Other (Including Israel) [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 3,451 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | $ 1,095 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | $ 1,396 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember

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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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