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1. DESCRIPTION OF BUSINESS (Tables)
 12 Months Ended
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Affiliates of Radnet
    % owned by RadNet, Inc.
     
Franklin Imaging Joint Venture   49%
Carroll County Radiology, LLC   40%
MRI at St. Joseph Medical Center, LLC   49%
Greater Baltimore Diagnostic Imaging Partnership ("GBDIP")   50%