Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Statement [Abstract]
Revenues, net (including revenues, net from related parties of $8,141 and $8,073, respectively)	$ 381,961	$ 326,239
Operating expenses:
Technical and operating (excluding depreciation and amortization shown below and including charges from related parties of $155 and $0, respectively)	136,679	104,930
Selling, general and administrative (including charges from related parties of $794 and $1,996, respectively)	99,453	99,222
Restructuring credit	0	(3)
Depreciation and amortization	18,345	25,051
Total operating expenses	254,477	229,200
Operating income (loss)	127,484	97,039
Other income (expense):
Interest expense	(29,369)	(29,797)
Interest income	253	105
Write-off of deferred financing costs	0	(312)
Miscellaneous, net	(202)	12
Total nonoperating income (expense)	(29,318)	(29,992)
Income from continuing operations before income taxes	98,166	67,047
Income tax expense	(36,649)	(23,970)
Income from continuing operations	61,517	43,077
Income from discontinued operations, net of income taxes	0	104
Net income	$ 61,517	$ 43,181
Basic net income per share:
Income from continuing operations	$ 0.86	$ 0.62
Income from discontinued operations	$ 0.00	$ 0.00
Net income	$ 0.86	$ 0.62
Diluted net income per share:
Income from continuing operations	$ 0.85	$ 0.60
Income from discontinued operations	$ 0.00	$ 0.00
Net income	$ 0.85	$ 0.60
Weighted average common shares:
Basic weighted average common shares	71,290	69,871
Diluted weighted average common shares	72,547	72,130