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SIGNIFICANT ACCOUNTING POLICIES (Annual Rates of Depreciation) (Details) | 12 Months Ended
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Dec. 31, 2016
Computers and electronic equipment [Member] |
Property, Plant and Equipment [Line Items] |
Annual rate of depreciation, minimum | 15.00%
Annual rate of depreciation, maximum | 33.00%
Office furniture and equipment [Member] |
Property, Plant and Equipment [Line Items] |
Annual rate of depreciation, minimum | 6.00%
Annual rate of depreciation, maximum | 33.00%

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- Definition Rate of depreciation, maximum. + References No definition available. + Details
Name: | rdcm_DepreciationRateMaximum
Namespace Prefix: | rdcm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of depreciation, minimum. + References No definition available. + Details
Name: | rdcm_DepreciationRateMinimum
Namespace Prefix: | rdcm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |