Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Statement [Abstract]
Revenues, net (including revenues, net from related parties of $8,106, $7,901, $24,281 and $23,869, respectively)	$ 332,056	$ 283,914	$ 985,865	$ 848,782
Operating expenses:
Technical and operating (excluding depreciation and amortization shown below and including charges from related parties of $155, $1,292, $465 and $3,893, respectively)	129,627	96,420	348,906	282,714
Selling, general and administrative (including charges from related parties of $(1,174), $3,184, $1,930 and $53,934, respectively)	97,202	68,229	287,302	243,714
Restructuring credit	0	(191)	(3)	(240)
Depreciation and amortization	18,368	25,012	67,486	75,197
Total operating expenses	245,197	189,470	703,691	601,385
Operating income	86,859	94,444	282,174	247,397
Other income (expense):
Interest expense	(29,962)	(31,789)	(89,190)	(65,492)
Interest income	100	318	307	938
Write-off of deferred financing costs	(334)	0	(646)	(5,703)
Loss on extinguishment of debt	0	(17)	0	(14,535)
Miscellaneous, net	1	(199)	(631)	(120)
Total nonoperating income (expense)	(30,195)	(31,687)	(90,160)	(84,912)
Income from continuing operations before income taxes	56,664	62,757	192,014	162,485
Income tax expense	(20,121)	(22,440)	(70,989)	(65,388)
Income from continuing operations	36,543	40,317	121,025	97,097
Income from discontinued operations, net of income taxes	105	(314)	314	(121)
Net income	$ 36,648	$ 40,003	$ 121,339	$ 96,976
Basic net income per share:
Income from continuing operations	$ 0.52	$ 0.58	$ 1.72	$ 1.40
Income from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income	$ 0.52	$ 0.58	$ 1.73	$ 1.40
Diluted net income per share:
Income from continuing operations	$ 0.51	$ 0.56	$ 1.68	$ 1.38
Income from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income	$ 0.51	$ 0.55	$ 1.68	$ 1.38
Weighted average common shares:
Basic weighted average common shares	70,506	69,284	70,286	69,203
Diluted weighted average common shares	72,265	72,268	72,194	70,209