CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from Operating Activities
Net Income	$ 38,328	$ 3,637
Adjustments to reconcile Net Income to Cash from Operating Activities:
Depreciation and Amortization	19,460	15,328
Deferred Income Taxes	10,450	2,782
Other, net	4,643	13,013
Changes in Operating Assets and Liabilities:
Accounts Receivable	(468)	(1,577)
Inventory	(305)	(346)
Prepaid Expenses	(198)	(1,655)
Lessor Maintenance Deposits	(2,858)	(3,919)
Aircraft Deposits	(187)	(1,044)
Other Assets	581	(6,262)
Accounts Payable	(288)	9,500
Accrued Transportation Taxes	(2,264)	1,362
Air Traffic Liabilities	(16,382)	(7,616)
Loyalty Program Liabilities	(1,638)	(2,344)
Operating Lease Obligations	(1,434)	(3,240)
Other Liabilities	421	594
Net Cash Provided by Operating Activities	47,861	18,213
Cash Flows from Investing Activities:
Purchases of Property & Equipment	(104,978)	(49,683)
Purchases of Investments	(24,228)	(3)
Proceeds from the Maturities of Investments	32,840	0
Other, net	1,129	58
Net Cash Used in Investing Activities	(95,237)	(49,628)
Cash Flows from Financing Activities:
Common Stock Repurchases	(14,812)	0
Proceeds from Borrowings	71,280	77,986
Repayment of Finance Lease Obligations	(4,277)	(4,466)
Repayment of Borrowings	(10,122)	(77,947)
Other, net	(3,258)	(1,456)
Net Cash Provided by (Used in) Financing Activities	38,811	(5,883)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(8,565)	(37,298)
Cash, Cash Equivalents and Restricted Cash--Beginning of the Period	102,928	317,785
Cash, Cash Equivalents and Restricted Cash--End of the Period	94,363	280,487
Non-cash transactions:
Aircraft and Flight Equipment Acquired through Finance Leases	0	19,928
Changes to Finance Lease Assets due to Operating and Finance Lease Modifications	$ 0	$ 46,311