Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended						6 Months Ended
	Jun. 30, 2014		Sep. 30, 2013	Jun. 30, 2013		Sep. 30, 2012	Jun. 30, 2014		Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Revenue	$ 549,170			$ 553,050			$ 1,149,539		$ 1,126,357
Expenses:
Direct operating	386,059	[1]		363,950	[1]		810,704	[1]	768,845	[1]
Marketing	9,783			7,122			17,380		14,508
Research and development	3,412			2,354			6,886		4,661
General and administrative	48,974			54,294			101,965		107,755
Depreciation and other	49,180			47,331			98,275		93,911
Amortization of intangible assets	3,847			1,877			7,695		3,894
Total expenses	501,255			476,928			1,042,905		993,574
Operating income	47,915			76,122			106,634		132,783
Other income (expense), net:
Loss from equity method investments, net	(10,541)			(9,629)			(19,909)		(16,654)
Interest expense, net	(12,929)			(12,018)			(22,574)		(17,551)
Other, net	2,902			(980)			1,158		(921)
Total other expense, net	(20,568)			(22,627)			(41,325)		(35,126)
Income from continuing operations before income taxes	27,347			53,495			65,309		97,657
Income tax expense	(5,537)			(3,082)			(19,613)		(19,237)
Income from continuing operations	21,810			50,413			45,696		78,420
Loss from discontinued operations, net of tax (Note 13)	(57)			(3,556)			(768)		(8,959)
Net income	21,753			46,857			44,928		69,461
Other comprehensive income:
Foreign currency translation adjustment	(336)	[2]		(242)			539	[3],[4]	(2,156)	[3]
Comprehensive income	$ 21,417			$ 46,615			$ 45,467		$ 67,305
Basic earnings (loss) per share:
Continuing operations (in dollars per share)	$ 1.12			$ 1.84			$ 2.10		$ 2.86
Discontinued operations (in dollars per share)	$ 0.00			$ (0.13)			$ (0.03)		$ (0.33)
Basic earnings per share (in dollars per share)			$ 1.12			$ 1.71	$ 2.07		$ 2.53
Diluted earnings (loss) per share:
Continuing operations (in dollars per share)	$ 1.08			$ 1.77			$ 2.03		$ 2.73
Discontinued operations (in dollars per share)	$ 0.00			$ (0.13)			$ (0.03)		$ (0.31)
Diluted earnings per share (in dollars per share)	$ 1.08			$ 1.64			$ 2.00		$ 2.42
Weighted average shares used in basic per share calculations	19,541			27,438			21,730		27,465
Weighted average shares used in diluted per share calculations (Note 14)	20,181			28,537			22,488		28,737

[1] “Direct operating” excludes depreciation and other of $32.2 million and $64.5 million for the three and six months ended June 30, 2014, respectively

[2] Foreign currency translation adjustment has no tax effect for the three months ended June 30, 2014.

[3] Foreign currency translation adjustment had no tax effect for the three and six months ended June 30, 2014 and 2013, respectively.

[4] Foreign currency translation adjustment has no tax effect for the six months ended June 30, 2014.