Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

Income from continuing operations before income taxes consists of the following components:

	Years Ended December 31,
	2014		2013		2012
Domestic	$	384,853	$	468,314	$	221,941
Foreign	12,175		687		333
Total	$	397,028	$	469,001	$	222,274

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Income tax expense attributable to continuing operations consists of the following components:

	Years Ended December 31,
	2014			2013			2012
Current expense (benefit):
Federal	$	111,047		$	(10,137	)	$	148,495
State	10,882			2,403			14,443
Foreign	13,837			5,104			4,393
	135,766			(2,630		)	167,331
Deferred expense (benefit):
Federal	5,036			154,299			(77,360		)
State	(1,373		)	17,205			(11,154		)
Foreign	(2,456		)	—			—
	1,207			171,504			(88,514		)
Tax (benefit) expense relating to uncertain tax positions, including accrued interest	(7,818		)	9,967			7,241
Income tax expense	$	129,155		$	178,841		$	86,058

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of the federal statutory income tax rate to the effective income tax rate is as follows:

	Years Ended December 31,
	2014		2013		2012
U.S. federal statutory income tax rate	35	%	35	%	35	%
State and local income taxes, net of federal benefit	2		2		2
Effect of foreign operations	(2	)	—		—
Nontaxable income attributable to noncontrolling interests	(1	)	—		—
Changes in the valuation allowance	1		1		(1	)
Domestic production activity deduction	(2	)	(1	)	—
Tax expense relating to uncertain tax positions, including accrued interest, net of deferred tax benefits	(1	)	2		2
Other	—		(1	)	1
Effective income tax rate	32	%	38	%	39	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The tax effects of temporary differences that give rise to significant components of deferred tax assets or liabilities at December 31, 2014 and 2013 are as follows:

	December 31,
	2014			2013
Deferred Tax Asset (Liability)
Current
NOLs and tax credit carry forwards	$	9,003		$	5,130
Compensation and benefit plans	15,213			13,299
Allowance for doubtful accounts	286			316
Other liabilities	5,537			1,280
Deferred tax asset	30,039			20,025
Valuation allowance	(596		)	(2,623		)
Net deferred tax asset, current	29,443			17,402
Other assets	(4,662		)	(1,734		)
Deferred tax liability, current	(4,662		)	(1,734		)
Net deferred tax asset, current	24,781			15,668
Noncurrent
NOLs and tax credit carry forwards	68,042			26,413
Compensation and benefit plans	20,705			18,713
Fixed assets and intangible assets	43,751			—
Interest rate swap contracts	2,857			3,577
Accrued interest expense	10,522			—
Other liabilities	9,171			7,281
Deferred tax asset	155,048			55,984
Valuation allowance	(50,434		)	(7,335		)
Net deferred tax asset, noncurrent	104,614			48,649
Prepaid liabilities	(781		)	(825		)
Fixed assets and intangible assets	(64,762		)	(8,595		)
Investments in partnerships	(138,790		)	(131,116		)
Other assets	(13,803		)	(3,388		)
Deferred tax liability, noncurrent	(218,136		)	(143,924		)
Net deferred tax liability, noncurrent	(113,522		)	(95,275		)
Total net deferred tax liability	$	(88,741	)	$	(79,607	)

Schedule Of Unrecognized Tax Benefits Reconciliation [Table Text Block]

A reconciliation of the beginning to ending amount of the liability for uncertain tax positions (excluding related accrued interest and deferred tax benefit) is as follows:

Balance at December 31, 2013	$	26,333
Increases related to current year tax positions	2,235
Increases related to prior year tax positions	999
Decreases related to prior year tax positions	(644		)
Decreases due to settlements of prior year tax positions	(8,944		)
Decreases due to payments related to prior year tax positions	(2,880		)
Balance at December 31, 2014	$	17,099