CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net income	$ 185,862	$ 184,661
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of flight equipment	250,399	220,711
Share-based Compensation	9,077	7,740
Deferred taxes	103,885	101,601
Amortization of debt discounts and issuance costs	15,429	14,549
Gain on aircraft sales, trading and other activity	(17,160)	(37,713)
Changes in operating assets and liabilities:
Other assets	(86,712)	2,367
Accrued interest and other payables	31,240	7,298
Rentals received in advance	5,943	3,556
Net cash provided by operating activities	497,963	504,770
Investing Activities
Acquisition of flight equipment under operating lease	(1,142,367)	(1,138,130)
Payments for deposits on flight equipment purchases	(385,628)	(437,721)
Proceeds from aircraft sales, trading and other activity	433,284	507,202
Acquisition of aircraft furnishings, equipment and other assets	(84,874)	(117,132)
Net cash used in investing activities	(1,179,585)	(1,185,781)
Financing Activities
Issuance of common stock upon exercise of options and warrants	1,664
Cash dividends paid	(15,450)	(10,271)
Tax withholdings on stock-based compensation	(5,600)	(5,890)
Net change in unsecured revolving facilities	711,000	938,000
Proceeds from debt financings	1,096,673	690,754
Payments in reduction of debt financings	(1,229,690)	(962,403)
Net change in restricted cash	(6,239)	(7,862)
Debt issuance costs	(3,964)	(3,157)
Security deposits and maintenance reserve receipts	110,766	93,261
Security deposits and maintenance reserve disbursements	(12,630)	(35,362)
Net cash provided by financing activities	646,530	697,070
Net increase/(decrease) in cash	(35,092)	16,059
Cash and cash equivalents at beginning of period	274,802	156,675
Cash and cash equivalents at end of period	239,710	172,734
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest, including capitalized interest of $21,931 and $19,521 at June 30, 2017 and 2016, respectively	159,269	151,165
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	312,837	525,991
Cash dividends declared, not yet paid	$ 7,741	$ 5,142