No definition available.

Name:	rdnt_NetRevenueFromJointVentures
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Total book value of other joint venture partner interests

No definition available.

Name:	rdnt_TotalBookValueOfOtherJointVenturePartnerInterests
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Total value of Radnet joint venture interests

No definition available.

Name:	rdnt_TotalValueOfRadnetJointVentureInterests
Namespace Prefix:	rdnt_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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Name:	us-gaap_EquityMethodInvestmentAggregateCost
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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

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Name:	us-gaap_EquityMethodInvestments
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The amount of assets reported by an equity method investment of the entity.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

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-Section S99

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Name:	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
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The amount of current assets reported by an equity method investment of the entity.

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Namespace Prefix:	us-gaap_
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The amount of current liabilities reported by an equity method investment of the entity.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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The amount of liabilities reported by an equity method investment of the entity.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

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

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-Topic 323

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This item represents the amount of unrealized intercompany profits and losses on transactions between the Entity and unconsolidated subsidiaries (including certain corporate joint ventures, and noncontrolled corporations), accounted for under the equity method of accounting, which have not been eliminated in preparing the Entity's financial statements.

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

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This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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

-Publisher FASB

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-Topic 230

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