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SIGNIFICANT ACCOUNTING POLICIES (Changes in the Liability for Product Warranty) (Details)	12 Months Ended
	Dec. 31, 2014
SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Product warranty period	12 months

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- Definition

Period the product warranty is effective, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	rdcm_ProductWarrantyPeriod
Namespace Prefix:	rdcm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration