CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 227,362	$ 148,277
Marketable securities	574,266	686,946
Receivables, net	122,778	82,854
Inventories, net	139,002	127,114
Other current assets	53,659	86,705
Total current assets	1,117,067	1,131,896
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares	8,774,570	8,323,107
Deposits on aircraft	65,612	77,282
Buildings, ground equipment and other	292,682	282,398
Total property and equipment, gross	9,132,864	8,682,787
Less-accumulated depreciation and amortization	(3,545,456)	(3,199,820)
Total property and equipment, net	5,587,408	5,482,967
OTHER ASSETS:
Operating lease right-of-use assets	87,731	86,727
Long-term receivables and other assets	347,661	324,703
Total other assets	435,392	411,430
Total assets	7,139,867	7,026,293
CURRENT LIABILITIES:
Current maturities of long-term debt	535,589	443,869
Accounts payable and accrued liabilities	527,351	470,251
Accrued salaries, wages and benefits	226,770	194,881
Current maturities of operating lease liabilities	20,467	19,335
Taxes other than income taxes	22,581	26,077
Other current liabilities	96,833	99,879
Total current liabilities	1,429,591	1,254,292
LONG-TERM DEBT, net of current maturities	2,136,786	2,562,183
DEFERRED INCOME TAXES PAYABLE	787,968	687,600
NONCURRENT OPERATING LEASE LIABILITIES	67,264	67,392
OTHER LONG-TERM LIABILITIES	309,477	341,324
COMMITMENTS AND CONTINGENCIES (Note 5)
STOCKHOLDERS' EQUITY:
Preferred stock, 5,000,000 shares authorized; none issued
Common stock, no par value, 120,000,000 shares authorized; 83,638,680 and 82,840,372 shares issued as of December 31, 2024, and December 31, 2023, respectively	777,090	754,362
Retained earnings	2,594,173	2,271,211
Treasury stock, at cost, 43,310,324 and 42,615,347 shares as of December 31, 2024, and December 31, 2023, respectively	(962,650)	(912,396)
Accumulated other comprehensive income	168	325
Total stockholders' equity	2,408,781	2,113,502
Total liabilities and stockholders' equity	$ 7,139,867	$ 7,026,293