CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating Activities
Net income	$ 285,050	$ 277,937
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of flight equipment	377,952	333,962
Share-based Compensation	14,435	12,342
Deferred taxes	158,816	152,898
Amortization of debt discounts and issuance costs	22,388	22,630
Gain on aircraft sales, trading and other activity	(23,785)	(47,687)
Changes in operating assets and liabilities:
Other assets	(80,509)	(24,305)
Accrued interest and other payables	(5,768)	23,769
Rentals received in advance	3,057	9,933
Net cash provided by operating activities	751,636	761,479
Investing Activities
Acquisition of flight equipment under operating lease	(1,304,317)	(1,436,679)
Payments for deposits on flight equipment purchases	(565,343)	(641,737)
Proceeds from aircraft sales, trading and other activity	595,796	649,210
Acquisition of aircraft furnishings, equipment and other assets	(134,709)	(165,378)
Net cash used in investing activities	(1,408,573)	(1,594,584)
Financing Activities
Issuance of common stock upon exercise of options and warrants	2,214
Cash dividends paid	(23,191)	(15,413)
Tax withholdings on stock-based compensation	(5,600)	(5,890)
Net change in unsecured revolving facilities	670,000	298,000
Proceeds from debt financings	1,101,673	1,526,001
Payments in reduction of debt financings	(1,266,440)	(1,000,559)
Net change in restricted cash	(3,411)	(534)
Debt issuance costs	(4,164)	(4,362)
Security deposits and maintenance reserve receipts	173,879	153,151
Security deposits and maintenance reserve disbursements	(36,806)	(47,142)
Net cash provided by financing activities	608,154	903,252
Net (decrease)/increase in cash	(48,783)	70,147
Cash and cash equivalents at beginning of period	274,802	156,675
Cash and cash equivalents at end of period	226,019	226,822
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest, including capitalized interest of $33,618 and $30,137 at September 30, 2017 and 2016, respectively	252,806	224,420
Supplemental Disclosure of Noncash Activities
Buyer furnished equipment, capitalized interest, deposits on flight equipment purchases and seller financing applied to acquisition of flight equipment and other assets applied to payments for deposits on flight equipment purchases	398,024	642,417
Cash dividends declared, not yet paid	$ 7,742	$ 5,142