Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 953,428	$ 1,333,507
Restricted cash	95,400	95,400
Short-term investment securities	106,255	106,313
Accounts receivable, net	172,212	128,828
Aircraft maintenance deposits, net	13,756	10,726
Income tax receivable	36,363	37,890
Prepaid expenses and other current assets	173,139	129,827
Total current assets	1,550,553	1,842,491
Property and equipment:
Flight equipment	4,447,877	4,356,523
Ground property and equipment	477,752	384,928
Less accumulated depreciation	(1,044,492)	(884,858)
Total property and equipment, net	3,881,137	3,856,593
Operating lease right-of-use assets	2,332,808	1,950,520
Pre-delivery deposits on flight equipment	496,812	484,821
Long-term aircraft maintenance deposits	25,880	38,166
Deferred heavy maintenance, net	360,034	330,062
Other long-term assets	38,271	37,372
Total assets	8,685,495	8,540,025
Current liabilities:
Accounts payable	112,007	44,952
Air traffic liability	495,815	382,317
Current maturities of long-term debt, net and finance leases	353,937	208,948
Current maturities of operating leases	175,614	158,631
Other current liabilities	531,158	480,754
Total current liabilities	1,668,531	1,275,602
Long-term debt, net and finance leases, less current maturities	2,657,830	2,975,823
Operating leases, less current maturities	2,104,484	1,751,351
Deferred income taxes	297,875	375,472
Deferred gains and other long-term liabilities	116,998	47,742
Shareholders’ equity:
Common stock	11	11
Additional paid-in-capital	1,143,076	1,131,826
Treasury stock, at cost	(77,446)	(75,639)
Retained earnings	774,883	1,058,369
Accumulated other comprehensive loss	(747)	(532)
Total shareholders’ equity	1,839,777	2,114,035
Total liabilities and shareholders’ equity	$ 8,685,495	$ 8,540,025