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SUBSEQUENT EVENTS (Details) - AZ Tech Radiology & Open MRI, LLC - Subsequent Event $ in Millions | Aug. 31, 2020 USD ($) Center
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Subsequent Event [Line Items] |
Number of assets acquired | Center | 8
Purchase consideration | $ | $ 4.0

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- Definition Number Of Assets Acquired + References No definition available. + Details
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Namespace Prefix: | rdnt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Payments For Asset Acquisitions + References No definition available. + Details
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Namespace Prefix: | rdnt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | rdnt_AssetAcquisitionAxis=rdnt_AZTechMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
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