CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
OPERATING REVENUES:
Total operating revenues	$ 789,443	$ 744,783	$ 2,323,680	$ 1,936,328
OPERATING EXPENSES:
Salaries, wages and benefits	307,727	265,603	896,347	718,868
Aircraft maintenance, materials and repairs	183,182	209,795	506,478	604,501
Depreciation and amortization	97,433	109,597	297,427	329,089
Aircraft fuel	28,179	32,561	85,089	77,622
Airport-related expenses	17,501	25,992	54,196	72,478
Aircraft rentals	16,089	16,098	48,109	47,311
Special items - impairment charges		84,592		84,592
Payroll support grant		(115,352)		(422,669)
Other operating expenses	63,756	68,847	219,808	181,621
Total operating expenses	713,867	697,733	2,107,454	1,693,413
OPERATING INCOME	75,576	47,050	216,226	242,915
OTHER INCOME (EXPENSE):
Interest income	6,348	238	9,332	732
Interest expense	(33,283)	(28,980)	(92,308)	(94,274)
Other income (expense), net	8,112	(4,098)	21,011	(3,802)
Total other expense, net	(18,823)	(32,840)	(61,965)	(97,344)
INCOME BEFORE INCOME TAXES	56,753	14,210	154,261	145,571
PROVISION FOR INCOME TAXES	8,381	4,526	34,204	37,993
NET INCOME	$ 48,372	$ 9,684	$ 120,057	$ 107,578
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.96	$ 0.19	$ 2.38	$ 2.14
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.96	$ 0.19	$ 2.37	$ 2.12
Weighted average common shares:
Basic (in shares)	50,593	50,380	50,531	50,337
Diluted (in shares)	50,636	50,725	50,636	50,726
COMPREHENSIVE INCOME:
Net income	$ 48,372	$ 9,684	$ 120,057	$ 107,578
Net unrealized depreciation on marketable securities, net of taxes	(2,624)		(4,569)
TOTAL COMPREHENSIVE INCOME	45,748	9,684	115,488	107,578
Flying agreements
OPERATING REVENUES:
Total operating revenues	763,514	719,084	2,245,351	1,863,242
Lease, airport services and other
OPERATING REVENUES:
Total operating revenues	$ 25,929	$ 25,699	$ 78,329	$ 73,086