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Escrow Settlement Agreement (Details) - NovaMed [Member] - USD ($)
$ in Millions
Jul. 08, 2013
Oct. 16, 2012
Escrow Settlement Agreement [Line Items]    
Cash held in escrow not released   $ 1.4
Common stock held in escrow not released   622,363
Escrow settlement, cash $ 0.8  
Escrow settlement, common stock retained 342,300  
Escrow settlement, cash and shares combined value $ 2.6