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7. FAIR VALUE MEASUREMENTS (Details Narrative) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Fair Value Measurements Details Narrative
Line of credit	$ 340,000	$ 3,300,000

X

- Details

Name:	rdnt_FairValueMeasurementsDetailsNarrativeAbstract
Namespace Prefix:	rdnt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033

+ Details

Name:	us-gaap_LinesOfCreditFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant