1. DESCRIPTION OF BUSINESS (Details)	Dec. 31, 2012
Franklin Imaging Joint Venture [Member]
Owned by parent company	49.00%
Carroll County Radiology, LLC [Member]
Owned by parent company	40.00%
MRI at St. Joseph Medical Center, LLC [Member]
Owned by parent company	49.00%
Greater Baltimore Diagnostic Imaging Partnership [Member]
Owned by parent company	50.00%