CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING REVENUES:
Total operating revenues	$ 735,152	$ 534,555
OPERATING EXPENSES:
Salaries, wages and benefits	300,058	219,842
Aircraft maintenance, materials and repairs	148,413	203,827
Depreciation and amortization	102,745	109,597
Aircraft fuel	25,090	19,194
Airport-related expenses	19,205	24,448
Aircraft rentals	15,996	15,490
Payroll support grant		(193,173)
Other operating expenses	71,597	54,488
Total operating expenses	683,104	453,713
OPERATING INCOME	52,048	80,842
OTHER INCOME (EXPENSE):
Interest income	425	284
Interest expense	(28,592)	(31,354)
Other income, net	880	216
Total other expense, net	(27,287)	(30,854)
INCOME BEFORE INCOME TAXES	24,761	49,988
PROVISION FOR INCOME TAXES	7,027	14,088
NET INCOME	$ 17,734	$ 35,900
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.35	$ 0.71
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.35	$ 0.71
Weighted average common shares:
Basic (in shares)	50,480	50,286
Diluted (in shares)	50,708	50,727
COMPREHENSIVE INCOME:
Net income	$ 17,734	$ 35,900
TOTAL COMPREHENSIVE INCOME	17,734	35,900
Flying agreements
OPERATING REVENUES:
Total operating revenues	708,063	511,191
Lease, airport services and other
OPERATING REVENUES:
Total operating revenues	$ 27,089	$ 23,364