Condensed Statements Of Operations (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Operating revenues:
Passenger	$ 319,812	$ 317,038	$ 901,851	$ 873,403
Non-ticket	255,029	202,731	719,766	583,690
Total operating revenues	574,841	519,769	1,621,617	1,457,093
Operating expenses:
Aircraft fuel	115,899	171,584	356,232	474,907
Salaries, wages and benefits	95,081	79,087	281,175	232,776
Aircraft rent	53,525	50,009	159,440	144,618
Landing fees and other rents	34,577	27,735	98,487	77,582
Distribution	23,074	20,202	65,920	58,930
Maintenance, materials and repairs	21,473	19,622	61,904	56,441
Depreciation and amortization	19,628	11,338	51,630	33,803
Other operating	54,151	39,190	156,071	111,045
Loss on disposal of assets	290	793	1,300	1,658
Special charges (credits)	(76)	18	673	45
Total operating expenses	417,622	419,578	1,232,832	1,191,805
Operating income	157,219	100,191	388,785	265,288
Other (income) expense:
Interest expense	5,951	878	13,182	1,088
Capitalized interest	(3,030)	(878)	(8,392)	(1,088)
Interest income	(233)	(84)	(544)	(235)
Other expense	166	81	282	1,557
Total other (income) expense	2,854	(3)	4,528	1,322
Income before income taxes	154,365	100,194	384,257	263,966
Provision for income taxes	57,251	33,194	141,437	94,411
Net income	$ 97,114	$ 67,000	$ 242,820	$ 169,555
Basic earnings per share (in dollars per share)	$ 1.35	$ 0.92	$ 3.35	$ 2.33
Diluted earnings per share (in dollars per share)	$ 1.35	$ 0.91	$ 3.34	$ 2.31