Discontinued Operations (Components Of Income (Loss) From Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operations [Abstract]
Revenues									$ 18,723	$ 145,463	$ 261,767
Income tax expense (benefit)									(5,626)	(19,330)	(15,439)
Income (Loss) from Discontinued Operations, Net of Tax (benefit) expense	$ (22,848)	$ (4,610)	$ (9,857)	$ (9,640)	$ (7,238)	$ (5,886)	$ (3,895)	$ (5,954)	$ (46,955)	$ (22,973)	$ (156,903)