Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 25,117	$ 19,449
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	55,600	48,786
Write-down of equipment	4,793	19,668
Stock-based compensation expenses	4,004	3,228
Amortization of deferred costs	4,143	3,639
Allowances and provisions	1,022	282
Gain on sale of leased equipment	(2,142)	(4,684)
Gain on insurance settlement		(1,288)
Income from joint ventures	(1,569)	(6,055)
Deferred income taxes	9,359	13,367
Changes in assets and liabilities:
Receivables	(6,951)	(220)
Distributions received from joint ventures	5,540	1,880
Spare parts inventory	(27,537)	7,021
Other assets	(3,173)	(1,692)
Accounts payable and accrued expenses	13,472	(687)
Maintenance reserves	16,431	1,706
Security deposits	3,519	6,651
Unearned revenue	(838)	990
Net cash provided by operating activities	100,790	112,041
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	51,600	53,849
Distributions received from joint ventures	190
Purchase of equipment held for operating lease	(320,186)	(177,263)
Purchase of property, equipment and furnishings	(1,574)	(493)
Net cash used in investing activities	(269,970)	(123,907)
Cash flows from financing activities:
Proceeds from issuance of debt obligations	616,439	485,700
Debt issuance cost	(6,068)	(7,473)
Principal payments on debt obligations	(306,800)	(448,237)
Interest bearing security deposits		(3,261)
Proceeds from shares issued under stock compensation plans	292	177
Cancellation of restricted stock units in satisfaction of withholding tax	(1,252)	(747)
Repurchase of common stock	(14,459)	(3,546)
Proceeds from the issuance of preferred stock		29,700
Preferred stock dividends	(2,440)	(891)
Net cash provided by financing activities	285,712	51,422
(Decrease)/Increase in cash, cash equivalents and restricted cash	116,532	39,556
Cash, cash equivalents and restricted cash at beginning of period	47,324	32,374
Cash, cash equivalents and restricted cash at end of period	163,856	71,930
Net cash paid for:
Interest	44,990	31,932
Income Taxes	1,074	346
Supplemental disclosures of non-cash activities:
Purchase of aircraft and engines	3,600	2,931
Transfers from Equipment held for operating lease to Equipment held for sale	6,995	36,285
Accrued preferred stock dividends	$ 819	$ 988