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SELECTED STATEMENTS OF OPERATIONS DATA (Schedule of Property and Equipment, Net, by Geographic Areas) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
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Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Property and equipment, net | $ 200 us-gaap_NoncurrentAssets | $ 253 us-gaap_NoncurrentAssets | $ 268 us-gaap_NoncurrentAssets
Israel [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Property and equipment, net | 151 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_IL | 213 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_IL | 222 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = country_IL
Other [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Property and equipment, net | $ 49 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = rdcm_OtherGeographicAreasMember | $ 40 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = rdcm_OtherGeographicAreasMember | $ 46 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = rdcm_OtherGeographicAreasMember

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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- Details
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Namespace Prefix: | us-gaap_
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |