Acquisitions And Other Arrangements (Schedule Of Preliminary Intangible Assets Included In Net Identifiable Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Feb. 10, 2014	Oct. 25, 2013
OnCure
Acquisitions [Line Items]
Acquired intangible assets			$ 57,739
Useful life of acquired intangible assets	11 years 7 months 6 days
OnCure | Management service agreements
Acquisitions [Line Items]
Acquired intangible assets			$ 57,739
South Florida Radiation Oncology
Acquisitions [Line Items]
Acquired intangible assets		$ 11,500
Useful life of acquired intangible assets	4 years 9 months 18 days
South Florida Radiation Oncology | Non-compete agreement
Acquisitions [Line Items]
Acquired intangible assets		9,400
Useful life of acquired intangible assets	5 years
South Florida Radiation Oncology | Trade names
Acquisitions [Line Items]
Acquired intangible assets		$ 2,100
Useful life of acquired intangible assets	3 years