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COMMITMENTS AND CONTINGENCIES (Bank Guarantee) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Guarantor Obligations [Line Items]
Maximum joint ownership of certain principal shareholders of the Company below which bank accelerate repayment	30.00%rdcm_PledgeConvenantMaximumJointOwnershipOfPrinicipalShareholderBelowWhichBankAccelerateRepayment
Maximum equity with respect to the balance sheet''''s total below which bank accelerate repayment	32.00%rdcm_PledgeConvenantMaximumEquityBelowWhichBankAccelerateRepayment
Guarantee expiring April 30, 2015 [Member]
Guarantor Obligations [Line Items]
Bank performance guarantee	32us-gaap_GuaranteeObligationsCurrentCarryingValue / us-gaap_GuaranteeObligationsByNatureAxis = rdcm_GuaranteeExpiringDateOneMember

X

- Definition

Represents maximum equity with respect to the balance sheet''''s total below which bank accelerate repayment.

+ References

No definition available.

+ Details

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Namespace Prefix:	rdcm_
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Balance Type:	na
Period Type:	instant

X

- Definition

Represents maximum joint ownership of certain principal shareholders of the Company below which bank accelerate repayment.

+ References

No definition available.

+ Details

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Namespace Prefix:	rdcm_
Data Type:	num:percentItemType
Balance Type:	na
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X

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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Period Type:	instant

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- Details

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- Details

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