Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 15,443	$ 14,158
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	35,739	32,644
Write-down of equipment	3,578	13,442
Stock-based compensation expenses	2,585	2,074
Amortization of deferred costs	2,349	2,361
Allowances and provisions	572	272
Gain on sale of leased equipment	(886)	(4,509)
Income from joint ventures	(1,063)	(3,015)
Deferred income taxes	6,220	10,406
Changes in assets and liabilities:
Receivables	(1,963)	3,345
Spare parts inventory	(4,866)	2,488
Other assets	(2,832)	(3,315)
Accounts payable and accrued expenses	3,292	8,139
Maintenance reserves	12,225	(342)
Security deposits	1,841	1,757
Unearned revenue	479	(628)
Net cash provided by operating activities	72,713	79,277
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	37,474	37,754
Distributions received from joint ventures		1,880
Purchase of equipment held for operating lease and for sale	(243,107)	(112,233)
Purchase of property, equipment and furnishings	(794)	(326)
Net cash used in investing activities	(206,427)	(72,925)
Cash flows from financing activities:
Proceeds from issuance of notes payable	199,000	93,000
Principal payments on notes payable	(53,268)	(72,752)
Proceeds from shares issued under stock compensation plans	118	93
Cancellation of restricted stock units in satisfaction of withholding tax	(848)	(622)
Repurchase of common stock	(10,183)	(3,348)
Preferred stock dividends	(1,611)	(596)
Net cash provided by (used in) financing activities	133,208	15,775
(Decrease)/Increase in cash, cash equivalents and restricted cash	(506)	22,127
Cash, cash equivalents and restricted cash at beginning of period	47,324	32,373
Cash, cash equivalents and restricted cash at end of period	46,818	54,500
Net cash paid for:
Interest	29,072	19,426
Income Taxes	1,065	332
Supplemental disclosures of non-cash investing activities:
Purchase of aircraft and engines		1,624
Transfers from Equipment held for operating lease to Equipment held for sale	13,479	27,408
Transfers from Equipment held for sale to Spare parts inventory	6,907
Accrued preferred stock dividends	$ 784	$ 331