CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from Operating Activities
Net Income (Loss)	$ 10,392	$ 82,334
Adjustments to reconcile Net Income to Cash from Operating Activities:
Depreciation and Amortization	49,364	41,532
Tax Receivable Agreement Adjustment	5,000	(19,800)
Operating Lease Right-of-use Assets	(199)	12,920
Non-Cash (Gain) Loss on Asset Transactions, net	(318)	2
Unrealized (Gain) on Fuel Derivatives	0	(3,527)
Amortization of Over-market Liabilities	(2,453)	(4,159)
Deferred Income Taxes	3,183	18,340
Amazon Warrants Vested	4,200	4,200
Stock-based Compensation Expense	1,981	4,577
Amortization of Debt Issuance Costs and Debt Securities	467	963
Loss on Extinguishment of Debt	1,557	1,224
Changes in Operating Assets and Liabilities:
Accounts Receivable	(88)	34
Inventory	(1,402)	(456)
Prepaid Expenses	(3,188)	(3,153)
Lessor Maintenance Deposits	(10,256)	(5,464)
Aircraft Deposits	(2,569)	1,162
Other Assets	(5,478)	2,297
Accounts Payable	8,674	2,257
Accrued Transportation Taxes	(1,736)	2,999
Air Traffic Liabilities	14,269	3,972
Loyalty Program Liabilities	(3,401)	(1,759)
Operating Lease Obligations	(61)	(32,651)
Other Liabilities	3,733	8,514
Net Cash Provided by Operating Activities	71,671	116,358
Cash Flows from Investing Activities:
Purchases of Property & Equipment	(177,658)	(118,016)
Proceeds from the Sale of Property & Equipment	777	0
Proceeds from Insurance Settlements	8,865	0
Purchases of Investments	(130,529)	(1,436)
Proceeds from the Sale of Investments	935	1,062
Net Cash Used in Investing Activities	(297,610)	(118,390)
Cash Flows from Financing Activities:
Cash Received from Stock Offering	0	235,894
Costs of Stock Offering	0	(8,706)
Proceeds from Stock Option and Warrant Exercises	1,656	2,407
Taxes Paid for Net Stock Settlement of Stock-Based Awards	(31)	0
Proceeds from Borrowings	188,277	80,500
Repayment of Finance Lease Obligations	(37,842)	(9,113)
Repayment of Borrowings	(95,305)	(75,728)
Debt Issuance Costs	(2,526)	(2,560)
Net Cash Provided by Financing Activities	54,229	222,694
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(171,710)	220,662
Cash, Cash Equivalents and Restricted Cash--Beginning of the Period	317,785	70,363
Cash, Cash Equivalents and Restricted Cash--End of the Period	146,075	291,025
Non-cash transactions:
Lease Deposits Applied Against the Purchase of Aircraft	1,085	3,296
Aircraft and Flight Equipment Acquired through Finance Leases	40,480	71,856
Finance Lease Asset Modifications	46,311	0
Aircraft Acquired From Exercise of Finance Lease Purchase Option, net of Accumulated Depreciation	28,012	0
Derecognition of Operating Lease Right-of-Use Assets, net	8,674	41,135
Derecognition of Operating Lease Obligations	8,674	44,726
Reconciliation of Cash, Cash Equivalents and Restricted Cash
Cash and Cash Equivalents	131,912	275,332
Restricted Cash	14,163	15,693
Total Cash, Cash Equivalents and Restricted Cash	$ 146,075	$ 291,025