Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating Revenue:
Passenger	$ 499,387	$ 506,797	$ 968,532	$ 974,810
Other	71,908	68,923	143,043	125,768
Total	571,295	575,720	1,111,575	1,100,578
Operating Expenses:
Aircraft fuel, including taxes and delivery	112,519	174,139	223,846	345,278
Wages and benefits	123,977	112,478	243,991	219,972
Aircraft rent	28,817	26,095	57,188	52,374
Maintenance materials and repairs	57,071	58,399	112,316	116,709
Aircraft and passenger servicing	29,348	30,860	57,664	61,081
Commissions and other selling	30,484	30,773	60,912	62,108
Depreciation and amortization	27,537	23,765	52,716	46,576
Other rentals and landing fees	23,248	21,656	46,079	42,218
Other	46,878	45,961	94,283	92,631
Total	479,879	524,126	948,995	1,038,947
Operating Income	91,416	51,594	162,580	61,631
Nonoperating Income (Expense):
Interest expense and amortization of debt discounts and issuance costs	(13,718)	(15,997)	(29,236)	(31,007)
Interest income	725	398	1,361	617
Capitalized interest	975	1,974	2,268	4,750
Gains (losses) on fuel derivatives	2,026	6,285	(3,661)	(614)
Loss on extinguishment of debt	(287)	0	(7,242)	0
Other, net	(1,876)	725	(4,810)	1,310
Total	(12,155)	(6,615)	(41,320)	(24,944)
Income Before Income Taxes	79,261	44,979	121,260	36,687
Income tax expense	30,427	17,652	46,543	14,435
Net Income	$ 48,834	$ 27,327	$ 74,717	$ 22,252
Net Income Per Share
Basic (in dollars per share)	$ 0.89	$ 0.51	$ 1.37	$ 0.42
Diluted (in dollars per share)	$ 0.79	$ 0.43	$ 1.18	$ 0.39