Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements of Operations and Comprehensive Income [Abstract]
Revenues	$ 238,915	$ 220,738
Operating expenses:
Operating costs	134,983	133,878
Selling, general and administrative	49,309	43,078
Casualty loss	174	(1)
Preopening costs	331
Depreciation and amortization	32,434	29,057
Operating income	21,684	14,726
Interest expense, net of amounts capitalized	(14,362)	(20,809)
Interest income	3,154	3,173
Income from unconsolidated companies		173
Other gains and (losses), net		(191)
Income (loss) before income taxes and discontinued operations	10,476	(2,928)
(Provision) benefit for income taxes	(4,469)	967
Income (loss) from continuing operations	6,007	(1,961)
Income from discontinued operations, net of income taxes	21	4
Net income (loss)	6,028	(1,957)
Basic income (loss) per share:
Income (loss) from continuing operations	$ 0.12	$ (0.04)
Income from discontinued operations, net of income taxes
Net income (loss)	$ 0.12	$ (0.04)
Fully diluted income (loss) per share:
Income (loss) from continuing operations	$ 0.12	$ (0.04)
Income from discontinued operations, net of income taxes
Net income (loss)	$ 0.12	$ (0.04)
Comprehensive income, net of deferred taxes of $0 and $1,858	$ 6,028	$ 1,452