Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities:
Net Income	$ 169,769	$ 197,043
Adjustments to reconcile Net Income to net cash provided by operating activities:
Depreciation and amortization	172,449	172,216
Reversal of expected credit losses	(6)	(381)
Loss on early extinguishment of debt	689	0
Special charge	2,633	0
Unrealized loss on financial instruments	0	113
Loss (gain) on disposal of flight equipment	(6,221)	16
Deferred taxes	49,981	60,086
Stock-based compensation	5,656	7,466
Changes in:
Accounts receivable	28,676	(24,730)
Prepaid expenses, current assets and other assets	(15,806)	(12,452)
Accounts payable, accrued liabilities and other liabilities	18,168	(56,271)
Net cash provided by operating activities	425,988	343,106
Investing Activities:
Capital expenditures	(54,193)	(43,359)
Purchase deposits and payments for flight equipment and modifications	(329,774)	(224,922)
Investment in joint ventures	(5,288)	(1,636)
Proceeds from disposal of flight equipment	13,500	1,850
Net cash used for investing activities	(375,755)	(268,067)
Financing Activities:
Proceeds from debt issuance	230,000	23,948
Payment of debt issuance costs	(2,176)	(1,257)
Payments of debt and finance lease obligations	(478,940)	(171,223)
Purchase of treasury stock	(100,000)	0
Customer maintenance reserves and deposits received	8,859	9,029
Customer maintenance reserves paid	0	(23,932)
Treasury shares withheld for payment of taxes	(12,065)	(7,432)
Net cash used for financing activities	(354,322)	(170,867)
Net increase (decrease) in cash, cash equivalents and restricted cash	(304,089)	(95,828)
Cash, cash equivalents and restricted cash at the beginning of period	921,017	856,281
Cash, cash equivalents and restricted cash at the end of period	616,928	760,453
Noncash Investing and Financing Activities:
Acquisition of property and equipment included in Accounts payable and accrued liabilities	0	7,928
Acquisition of property and equipment acquired under operating leases	488	8,875
Acquisition of flight equipment under finance leases	3,154	121,313
Issuance of shares related to settlement of warrant liability	0	31,582
Issuance of shares related to settlement of convertible notes	$ 7,901	$ 0