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NOTE 14 - INSURANCE PROCEEDS (Details Narrative) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011
Note 14 - Insurance Proceeds Details Narrative |
Insurance proceeds related to equipment lost in a fire | $ 2,400
Proceeds related to equipment lost in a flood | 319
Additional proceeds related to the fire | $ 309

X
- Definition Additional proceeds related to the fire + References No definition available. + Details
Name: | rdnt_AdditionalProceedsRelatedToFire
Namespace Prefix: | rdnt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | rdnt_InsuranceProceedsDetailsNarrativeAbstract
Namespace Prefix: | rdnt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Insurance proceeds related to equipment lost in a fire + References No definition available. + Details
Name: | rdnt_InsuranceProceedsRelatedToEquipmentLostInFire
Namespace Prefix: | rdnt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds related to equipment lost in a flood + References No definition available. + Details
Name: | rdnt_ProceedsRelatedToEquipmentLostInFlood
Namespace Prefix: | rdnt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration