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CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Operating Activities |  |  |
Net (loss)/income | $ (97,024) | $ 436,632 | $ 516,264
Adjustments to reconcile net (loss)/income to net cash provided by operating activities: |  |  |
Depreciation of flight equipment | 965,955 | 882,562 | 780,691
Write-off of Russian fleet, net of recoveries | 771,476 | 0 | 0
Stock-based compensation expense | 15,603 | 26,516 | 17,628
Deferred taxes | (43,492) | 97,446 | 166,467
Amortization of prepaid lease costs | 47,849 | 46,547 | 43,224
Amortization of discounts and debt issuance costs | 53,254 | 50,620 | 43,025
Gain on aircraft sales, trading and other activity | (113,103) | (46,109) | (34,654)
Changes in operating assets and liabilities: |  |  |
Other assets | (232,613) | (176,391) | (415,347)
Accrued interest and other payables | 255 | 63,112 | (22,810)
Rentals received in advance | 13,990 | (4,099) | (4,302)
Net cash provided by operating activities | 1,382,150 | 1,376,836 | 1,090,186
Investing Activities |  |  |
Acquisition of flight equipment under operating lease | (2,904,723) | (2,506,175) | (1,631,551)
Payments for deposits on flight equipment purchases | (518,270) | (496,838) | (885,679)
Proceeds from aircraft sales, trading and other activity | 235,424 | 137,887 | 151,132
Acquisition of aircraft furnishings, equipment and other assets | (216,635) | (229,654) | (160,993)
Net cash used in investing activities | (3,404,204) | (3,094,780) | (2,527,091)
Financing Activities |  |  |
Issuance of common stock upon exercise of options | 0 | 1,438 | 6,569
Net proceeds from preferred stock issuance | 0 | 591,340 | 0
Cash dividends paid on Class A common stock | (83,253) | (73,001) | (68,183)
Common shares repurchased | (150,000) | (5,780) | 0
Cash dividends paid on preferred stock | (41,700) | (28,473) | (15,375)
Tax withholdings on stock-based compensation | (8,903) | (7,441) | (8,618)
Net change in unsecured revolving facilities | 1,020,000 | 0 | (20,000)
Proceeds from debt financings | 2,659,996 | 3,655,830 | 4,659,762
Payments in reduction of debt financings | (2,085,898) | (3,194,482) | (1,728,029)
Debt issuance costs | (6,827) | (10,245) | (8,102)
Security deposits and maintenance reserve receipts | 417,224 | 174,521 | 114,596
Security deposits and maintenance reserve disbursements | (26,860) | (35,238) | (76,009)
Net cash provided by financing activities | 1,693,779 | 1,068,469 | 2,856,611
Net decrease in cash | (328,275) | (649,475) | 1,419,706
Cash, cash equivalents and restricted cash at beginning of period | 1,108,292 | 1,757,767 | 338,061
Cash, cash equivalents and restricted cash at end of period | 780,017 | 1,108,292 | 1,757,767
Supplemental Disclosure of Cash Flow Information |  |  |
Cash paid during the period for interest, including capitalized interest of $39,655, $49,070 and $53,163 at December 31, 2022, 2021 and 2020, respectively | 533,897 | 508,616 | 449,662
Cash paid for income taxes | 6,362 | 5,734 | 29,733
Supplemental Disclosure of Noncash Activities |  |  |
Buyer furnished equipment, capitalized interest and deposits on flight equipment purchases applied to acquisition of flight equipment | 914,501 | 1,009,554 | 782,896
Cash dividends declared on common stock, not yet paid | $ 22,178 | $ 21,088 | $ 18,216

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