Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 7,082	$ 8,167
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	17,355	16,628
Write-down of equipment		12,091
Stock-based compensation expenses	925	874
Amortization of deferred costs	1,433	1,198
Allowances and provisions	242	563
Gain on sale of leased equipment	(640)	(983)
Income from joint ventures	(747)	(1,854)
Deferred income taxes	2,300	6,181
Changes in assets and liabilities:
Receivables	(6,026)	4,150
Spare parts inventory	(2,944)	968
Other assets	284	(791)
Accounts payable and accrued expenses	(484)	3,834
Maintenance reserves	9,389	(4,340)
Security deposits	1,038	(160)
Unearned revenue	1,166	(580)
Net cash provided by operating activities	30,373	45,946
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	23,309	26,711
Deposit received for proposed sale of equipment	3,400
Distributions received from joint ventures		1,880
Purchase of equipment held for operating lease and for sale	(138,626)	(35,304)
Purchase of property, equipment and furnishings	(290)	(199)
Net cash used in investing activities	(112,207)	(6,912)
Cash flows from financing activities:
Proceeds from issuance of notes payable	123,000	18,000
Principal payments on notes payable	(29,779)	(46,847)
Proceeds from shares issued under stock compensation plans	118	94
Repurchase of common stock	(74)	(884)
Preferred stock dividends	(917)	(305)
Payments of tax withholdings for stock-based awards	(665)	(270)
Net cash provided by (used in) financing activities	91,683	(30,212)
Increase in cash, cash equivalents and restricted cash	9,849	8,822
Cash, cash equivalents and restricted cash at beginning of period	47,324	32,374
Cash, cash equivalents and restricted cash at end of period	57,173	41,196
Net cash paid for:
Interest	12,187	9,485
Income Taxes	71	75
Supplemental disclosures of non-cash investing activities:
Purchase of aircraft and engines	3,762	623
Transfers from Equipment held for operating lease to Equipment held for sale	7,889	37,883
Transfers from Equipment held for sale to Spare parts inventory	5,345
Transfers from Property, equipment and furnishings to Equipment held for lease		$ 2,925
Accrued preferred stock dividends	667
Accrued share repurchases	$ 10,109