INVESTMENT IN JOINT VENTURES (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Investment in Joint Ventures
Current assets - joint ventures	$ 15,795
Noncurrent assets - joint ventures	36,909
Current liabilities - joint ventures	(7,221)
Noncurrent liabilities - joint ventures	(5,554)
Total net assets -joint ventures	39,929
Book value of Radnet joint venture interests	19,319
Cost in excess of book value of acquired joint venture interests	3,511
Elimination of intercompany profit remaining on Radnet's consolidated balance sheet	289
Total value of Radnet joint venture interests	23,119
Total book value of other joint venture partner interests	$ 20,610

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 53

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant