Income Taxes (Schedule Of Components Of Provision (Benefit) For Income Taxes On Income From Continuing Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current income tax (benefit) provision, Federal	$ 3,522	$ 37,205	$ 21,208
Current income tax (benefit) provision, State	(6,261)	5,253	3,300
Current income tax (benefit) provision, Total	(2,739)	42,458	24,508
Deferred income tax (benefit) provision, Federal	(7,813)	1,188	22,398
Deferred income tax (benefit) provision, State	4,556	(1,666)	1,977
Deferred income tax expense (benefit), Total	(3,257)	(478)	24,375
Income tax (benefit) provision	$ (5,996)	$ 41,980	$ 48,883