Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Revenue:
Operating Revenue	$ 559,144	$ 656,751
Operating Expenses:
Wages and benefits	188,254	175,065
Aircraft fuel, including taxes and delivery	113,478	126,104
Maintenance, materials and repairs	60,409	63,045
Aircraft and passenger servicing	38,283	38,900
Depreciation and amortization	39,449	38,151
Aircraft rent	27,004	30,396
Commissions and other selling	26,716	30,836
Other rentals and landing fees	29,766	31,046
Purchased services	34,241	32,453
Special items	126,904	0
Other	42,736	38,079
Total	727,240	604,075
Operating Loss	(168,096)	52,676
Nonoperating Income (Expense):
Interest expense and amortization of debt discounts and issuance costs	(6,795)	(7,530)
Gains (losses) on fuel derivatives	(6,452)	570
Interest income	3,020	2,983
Capitalized interest	831	1,285
Other, net	2,304	(1,025)
Total	(7,092)	(3,717)
Income (Loss) Before Income Taxes	(175,188)	48,959
Income tax expense (benefit)	(30,816)	12,601
Net Income (Loss)	$ (144,372)	$ 36,358
Net Income (Loss) Per Share
Basic (in dollars per share)	$ (3.14)	$ 0.75
Diluted (in dollars per share)	$ (3.14)	$ 0.75
Weighted Average Number of Common Stock Shares Outstanding:
Basic (in shares)	45,967	48,392
Diluted (in shares)	45,967	48,429
Passenger
Operating Revenue:
Operating Revenue	$ 503,469	$ 601,304
Other
Operating Revenue:
Operating Revenue	$ 55,675	$ 55,447