Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating Revenue:
Passenger	$ 506,797	$ 481,461	$ 974,810	$ 921,400
Other	68,923	52,467	125,768	103,282
Total	575,720	533,928	1,100,578	1,024,682
Operating Expenses:
Aircraft fuel, including taxes and delivery	174,139	169,223	345,278	343,712
Wages and benefits	112,478	103,384	219,972	206,119
Aircraft rent	26,095	28,285	52,374	54,304
Maintenance materials and repairs	58,399	53,036	116,709	108,295
Aircraft and passenger servicing	30,860	29,228	61,081	58,287
Commissions and other selling	30,773	32,186	62,108	65,997
Depreciation and amortization	23,765	19,788	46,576	38,901
Other rentals and landing fees	21,656	19,630	42,218	38,777
Other	45,961	41,777	92,631	84,825
Total	524,126	496,537	1,038,947	999,217
Operating Income	51,594	37,391	61,631	25,465
Nonoperating Income (Expense):
Interest expense and amortization of debt discounts and issuance costs	(15,997)	(12,163)	(31,007)	(23,540)
Interest income	398	126	617	253
Capitalized interest	1,974	2,891	4,750	6,331
Gains (losses) on fuel derivatives	6,285	(6,906)	(614)	(13,467)
Other, net	725	(3,124)	1,310	(4,206)
Total	(6,615)	(19,176)	(24,944)	(34,629)
Income (Loss) Before Income Taxes	44,979	18,215	36,687	(9,164)
Income tax expense (benefit)	17,652	6,899	14,435	(3,335)
Net Income (Loss)	$ 27,327	$ 11,316	$ 22,252	$ (5,829)
Net Income (Loss) Per Common Stock
Basic (in dollars per share)	$ 0.51	$ 0.22	$ 0.42	$ (0.11)
Diluted (in dollars per share)	$ 0.43	$ 0.21	$ 0.39	$ (0.11)