Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Operating Revenue:
Passenger	$ 353,397	$ 277,706	$ 678,679	$ 541,103
Other	41,618	38,183	81,946	73,162
Total	395,015	315,889	760,625	614,265
Operating Expenses:
Aircraft fuel, including taxes and oil	135,471	78,610	244,834	148,916
Wages and benefits	79,713	73,181	157,285	146,080
Aircraft rent	31,154	27,128	65,229	51,242
Maintenance materials and repairs	42,724	29,544	86,138	65,413
Aircraft and passenger servicing	19,620	14,007	38,043	28,193
Commissions and other selling	23,292	17,122	49,525	39,790
Depreciation and amortization	15,604	14,397	30,307	28,384
Other rentals and landing fees	17,341	13,262	33,665	26,382
Other	30,263	24,640	60,711	50,289
Lease termination charges	70,014		70,014
Total	465,196	291,891	835,751	584,689
Operating Income (Loss)	(70,181)	23,998	(75,126)	29,576
Nonoperating Income (Expense):
Interest expense and amortization of debt discounts and issuance costs	(4,889)	(4,972)	(8,083)	(9,975)
Interest income	338	1,916	695	2,738
Capitalized interest	1,944	466	3,160	523
Losses on fuel derivatives	(10,453)	(4,845)	(2,074)	(5,472)
Other, net	668	(652)	341	(1,110)
Total	(12,392)	(8,087)	(5,961)	(13,296)
Income (Loss) Before Income Taxes	(82,573)	15,911	(81,087)	16,280
Income tax (benefit) expense	(32,531)	6,918	(31,900)	7,071
Net Income (Loss)	$ (50,042)	$ 8,993	$ (49,187)	$ 9,209
Net Income (Loss) Per Common Stock Share:
Basic (in dollars per share)	$ (0.99)	$ 0.17	$ (0.97)	$ 0.18
Diluted (in dollars per share)	$ (0.99)	$ 0.17	$ (0.97)	$ 0.17