Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

The benefit (provision) for income taxes is comprised of the following (dollars in thousands):

	For the Years Ended December 31,
	2015			2014			2013
Federal:
Current	$	49		$	1,367		$	(312	)
Deferred		95,259			182,371			183
Total Federal		95,308			183,738			(129	)
State:
Current		(3,099	)		(2,433	)		(1,627	)
Deferred (included in Federal above)		—			—			—
Total State		(3,099	)		(2,433	)		(1,627	)
Total	$	92,209		$	181,305		$	(1,756	)

Reconciliation of the benefit for income taxes to the amount computed at the U.S. Federal statutory rate

A reconciliation of the benefit (provision) for income taxes to the amount computed at the U.S. Federal statutory rate of 35% is as follows (dollars in thousands):

	For the Years Ended December 31,
	2015			2014			2013
Tax benefit at U.S. statutory rate	$	192,390		$	115,603		$	640
State taxes, net of federal income tax		18,323			11,582			(985	)
Tax credits		3,937			(2,222	)		9,757
Valuation allowance		(111,797	)		64,155			(7,097	)
Goodwill impairment		(7,856	)		—			—
Meals and entertainment		(1,090	)		(946	)		(496	)
Other, net		(1,626	)		(713	)		(1,007	)
Return to provision		(72	)		716			(2,568	)
Non-deductible transaction costs		—			(6,870	)		—
Total	$	92,209		$	181,305		$	(1,756	)

Components of deferred tax assets and liabilities

Significant components of the Company's deferred tax assets and liabilities at December 31 are as follows (dollars in thousands):

	2015			2014
Deferred income tax assets:
Capital and financing lease obligations	$	872,002		$	945,000
Operating loss carryforwards		282,075			227,956
Accrued expenses		144,691			146,536
Deferred lease liability		94,105			77,790
Tax credits		40,974			34,860
Intangible assets		22,522			17,785
Deferred gain on sale leaseback		5,661			7,073
Prepaid revenue		2,415			5,835
Total gross deferred income tax asset		1,464,445			1,462,835
Valuation allowance		(121,602	)		(9,213	)
Net deferred income tax assets		1,342,843			1,453,622
Deferred income tax liabilities:
Property, plant and equipment		(1,320,423	)		(1,556,603	)
Investment in unconsolidated ventures		(88,798	)		(54,113	)
Other		(2,673	)		(2,181	)
Total gross deferred income tax liability		(1,411,894	)		(1,612,897	)
Net deferred tax liability	$	(69,051	)	$	(159,275	)

Reconciliation of the unrecognized tax benefits

A reconciliation of the unrecognized tax benefits for the year 2015 is as follows (dollars in thousands):

Balance at January 1, 2015	$	30,195
Additions for tax positions related to the current year		—
Additions for tax positions related to prior years		50
Reductions for tax positions related to prior years		(9	)
Balance at December 31, 2015	$	30,236