Acquisitions And Other Arrangements (Schedule Of Preliminary Intangible Assets Included In Net Identifiable Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	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
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 [Member]
Acquisitions [Line Items]
Acquired intangible assets				9,400
Useful life of acquired intangible assets	5 years
South Florida Radiation Oncology | Trade Names [Member]
Acquisitions [Line Items]
Acquired intangible assets				$ 2,100
Useful life of acquired intangible assets	3 years