Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statements Of Income [Abstract]
Revenues, net (including revenues, net from related parties of $8,102, $8,028, $16,175 and $15,968, respectively)	$ 327,570	$ 291,965	$ 653,809	$ 564,868
Operating expenses:
Technical and operating (excluding depreciation and amortization shown below and including charges from related parties of $310, $1,396, $310 and $2,601, respectively)	114,349	95,883	219,279	186,294
Selling, general and administrative (including charges from related parties of $1,108, $26,459, $3,104 and $50,750, respectively)	90,878	88,564	190,100	175,485
Restructuring credit		(15)	(3)	(49)
Depreciation and amortization	24,067	25,259	49,118	50,185
Total operating expenses	229,294	209,691	458,494	411,915
Operating income	98,276	82,274	195,315	152,953
Other income (expense):
Interest expense	(29,431)	(15,353)	(59,228)	(33,703)
Interest income	102	163	207	620
Write-off of deferred financing costs		(5,703)	(312)	(5,703)
Loss on extinguishment of debt		(14,518)		(14,518)
Miscellaneous, net	(644)	7	(632)	79
Total nonoperating income (expense)	(29,973)	(35,404)	(59,965)	(53,225)
Income from continuing operations before income taxes	68,303	46,870	135,350	99,728
Income tax expense	(26,898)	(19,812)	(50,868)	(42,948)
Income from continuing operations	41,405	27,058	84,482	56,780
Income from discontinued operations, net of income taxes	105	97	209	193
Net income	$ 41,510	$ 27,155	$ 84,691	$ 56,973
Basic net income per share:
Income from continuing operations	$ 0.59	$ 0.39	$ 1.20	$ 0.82
Income from discontinued operations
Net income	$ 0.59	$ 0.39	$ 1.21	$ 0.82
Diluted net income per share:
Income from continuing operations	$ 0.57	$ 0.39	$ 1.17	$ 0.82
Income from discontinued operations
Net income	$ 0.58	$ 0.39	$ 1.17	$ 0.82
Weighted average common shares:
Basic weighted average common shares	70,479	69,161	70,175	69,161
Diluted weighted average common shares	72,183	69,161	72,157	69,161