Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income (loss) from continuing operations before income taxes	$ (73,073)	$ 5,287	$ (105,987)	$ 15,841
Income tax (expense) benefit at the statutory rate	25,575	(1,850)	37,095	(5,544)
State income taxes, net of U.S. Federal income tax benefit	(145)	(222)	(221)	(414)
State franchise tax (expense) benefit	(1,671)	0	(1,671)	0
Other	(998)	(1)	(1,004)	(48)
Total income tax (expense) benefit from continuing operations	$ 26,103	$ (2,073)	$ 37,541	$ (6,006)