Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes

Schedule of components of provision for income taxes

	Year ended December 31,
	2011			2010			2009
Current tax provision (benefit):
Federal	$	—		$	(1,600	)	$	(11,309	)
State		396			451			110
		396			(1,149	)		(11,199	)
Deferred tax provision (benefit):
Federal		(21,533	)		46,994			54,942
State		(1,698	)		3,706			4,332
		(23,231	)		50,700			59,274
Provision (benefit) for income taxes		(22,835	)		49,551		$	48,075

Schedule of income tax rate reconciliation

	Year ended December 31,
	2011			2010			2009
Computed "expected" provision (benefit) for income taxes at the statutory rates	$	(14,683	)	$	52,888		$	45,884
Increase (decrease) in income taxes resulting from:
Purchase accounting gain		1,999			(5,455	)		—
State income tax provision (benefit), net of Federal income tax benefit		(1,810	)		3,485			3,741
Other, net		(8,341	)		(1,367	)		(1,550	)
Provision (benefit) for income taxes		(22,835	)		49,551		$	48,075

Schedule of components of the deferred tax assets and liabilities

	As of December 31,
	2011			2010
Deferred tax assets:
Intangible Asset	$	37,404		$	37,779
Accrued benefits		35,460			30,316
Net operating loss carryforward		128,134			70,861
AMT credit carryforward		15,882			15,882
Deferred aircraft credits		49,867			42,282
Accrued reserves and other		24,538			22,707
Total deferred tax assets		291,285			219,827
Deferred tax liabilities:
Accelerated depreciation		(789,641	)		(733,572	)
Total deferred tax liabilities		(789,641	)		(733,572	)
Net deferred tax liability	$	(498,356	)	$	(513,745	)