Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Revenue	$ 552,864		$ 586,539		$ 1,702,403		$ 1,712,896
Expenses:
Direct operating	384,111	[1]	405,973	[1]	1,194,815	[1]	1,174,818	[1]
Marketing	9,762		8,395		27,142		22,903
Research and development	2,999		3,510		9,885		8,171
General and administrative	47,864		61,031		149,829		168,786
Depreciation and other	47,896		49,245		146,171		143,156
Amortization of intangible assets	3,671		3,191		11,366		7,085
Total expenses	496,303		531,345		1,539,208		1,524,919
Operating income	56,561		55,194		163,195		187,977
Other income (expense), net:
Loss from equity method investments, net	(11,352)		57,934		(31,261)		41,280
Interest expense, net	(12,463)		(8,402)		(35,037)		(25,953)
Other, net	(3,015)		(2,402)		(1,857)		(3,323)
Total other income (expense), net	(26,830)		47,130		(68,155)		12,004
Income from continuing operations before income taxes	29,731		102,324		95,040		199,981
Income tax expense	(11,841)		(15,529)		(31,454)		(34,766)
Income from continuing operations	17,890		86,795		63,586		165,215
Loss from discontinued operations, net of tax	0		(4,139)		(768)		(13,098)
Net income	17,890		82,656		62,818		152,117
Other comprehensive income:
Foreign currency translation adjustment	(695)	[2],[3]	1,852	[2],[4]	(156)	[2],[3]	(304)	[2],[4]
Comprehensive income	$ 17,195		$ 84,508		$ 62,662		$ 151,813
Basic earnings (loss) per share:
Continuing operations (in dollars per share)	$ 0.95		$ 3.19		$ 3.06		$ 6.03
Discontinued operations (in dollars per share)	$ 0.00		$ (0.16)		$ (0.04)		$ (0.48)
Basic earnings per share (in dollars per share)	$ 0.95		$ 3.03		$ 3.02		$ 5.55
Diluted earnings (loss) per share:
Continuing operations (in dollars per share)	$ 0.93		$ 3.10		$ 2.98		$ 5.78
Discontinued operations (in dollars per share)	$ 0.00		$ (0.15)		$ (0.04)		$ (0.46)
Diluted earnings per share (in dollars per share)	$ 0.93		$ 2.95		$ 2.94		$ 5.32
Weighted average shares used in basic per share calculations	18,798		27,244		20,792		27,391
Weighted average shares used in diluted per share calculations	19,147		28,016		21,372		28,582

[1] “Direct operating” excludes depreciation and other of $32.0 million and $96.5 million for the three and nine months ended September 30, 2014, respectively, and $33.0 million and $97.3 million for the three and nine months ended September 30, 2013, respectively.

[2] Foreign currency translation adjustment had no tax effect for the three and nine months ended September 30, 2014 and 2013, respectively.

[3] Foreign currency translation adjustment had no tax effect in 2014.

[4] Foreign currency translation adjustment had no tax effect in 2013.