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10. RELATED PARTY TRANSACTIONS (Details Narrative) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Related Party Transactions [Abstract]
Amount paid to related parties	$ 458,000

X

- Definition

Amount paid to related parties

+ References

No definition available.

+ Details

Name:	rdnt_AmountPaidToRelatedParties
Namespace Prefix:	rdnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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