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Segments Asset by Segment Detail (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]    
Identifiable assets by segment $ 42,168 $ 41,451
Diagnostic Services [Member]
   
Segment Reporting Information [Line Items]    
Identifiable assets by segment 17,973 11,874
Diagnostic Imaging [Member]
   
Segment Reporting Information [Line Items]    
Identifiable assets by segment $ 24,195 $ 29,577