Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred income tax assets:
Provision for doubtful accounts	$ 11,205	$ 9,034
State net operating loss carryforwards	16,507	12,445
Federal net operating loss carryforwards	118,658	86,180
Deferred rent liability	5,979	5,979
Intangible assets	23,660
Management fee receivable allowance	11,613	11,708
Merger costs and debt financing costs	1,305	1,256
Partnership interests	1,086
Other	15,595	13,930
Gross deferred income tax assets	205,608	140,532
Valuation allowance	(181,700)	(96,890)	$ (82,600)	$ (44,700)
Net deferred income tax assets	23,908	43,642
Deferred income tax liabilities:
Property and equipment	(22,320)	(33,441)
Intangible assets-Foreign	(3,544)	(4,094)
Prepaid expense	(873)	(506)
Partnership interests		(675)
Intangible assets		(8,155)
Other	(234)	(158)
Total deferred tax liabilities	(26,971)	(47,029)
Net deferred income tax liabilities	$ (3,063)	$ (3,387)