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1. NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details Narrative) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]          
Howard G. Berger, M.D.- President and Chief Executive Officer RadNet stock ownership 0.135   0.135    
Howard G. Berger, M.D.- President and Chief Executive Officer BRMG stock ownership 0.99   0.99    
VIE revenue, net management fees $ 16,100 $ 13,500 $ 33,500 $ 26,200  
VIE operating expenses 16,100 13,500 33,500 26,200  
VIE total billed net service fee revenue 77,700 67,100 158,300 130,200  
VIE management services 61,700 53,600 124,800 104,000  
VIE accounts receivable 59,900   59,900   51,800
VIE accounts payable 7,600   7,600   6,300
Working capital $ 41,800   $ 41,800   $ 37,300