Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 724,794	$ 865,211
Restricted cash	120,579	119,400
Short-term investment securities	115,290	112,501
Accounts receivable, net	216,650	205,468
Prepaid expenses and other current assets	247,952	209,547
Total current assets	1,425,265	1,512,127
Property and equipment:
Flight equipment	3,775,788	3,961,785
Ground property and equipment	785,335	726,364
Less accumulated depreciation	(1,224,788)	(1,169,021)
Total property and equipment, net	3,336,335	3,519,128
Operating lease right-of-use assets	4,156,810	3,561,028
Pre-delivery deposits on flight equipment	307,140	480,717
Deferred heavy maintenance, net	306,746	313,505
Other long-term assets	27,160	30,732
Total assets	9,559,456	9,417,237
Current liabilities:
Accounts payable	70,014	42,098
Air traffic liability	496,985	383,751
Current maturities of long-term debt, net, and finance leases	142,815	315,580
Current maturities of operating leases	243,528	224,865
Other current liabilities	557,806	705,298
Total current liabilities	1,511,148	1,671,592
Long-term debt, net and finance leases, less current maturities	3,124,079	3,055,221
Operating leases, less current maturities	3,895,269	3,298,871
Deferred income taxes	96,450	107,761
Deferred gains and other long-term liabilities	122,848	149,450
Shareholders’ equity:
Common stock	11	11
Additional paid-in-capital	1,169,904	1,158,278
Treasury stock, at cost	(81,280)	(80,635)
Retained earnings (deficit)	(278,807)	56,755
Accumulated other comprehensive income (loss)	(166)	(67)
Total shareholders’ equity	809,662	1,134,342
Total liabilities and shareholders’ equity	$ 9,559,456	$ 9,417,237