Revenue Recognition (Schedule Of Medicare Cap Liability Activity) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Revenue Recognition [Abstract]
Beginning Balance January 1,	$ 6,112	$ 8,260
2015 measurement period	(165)
2014 measurement period		(704)
Payments	(4,782)	(3,439)
Ending Balance June 30,	$ 1,165	$ 4,117