Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 14,069	$ 6,460	$ 7,180
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	66,280	69,424	65,314
Write-down of equipment	9,514	9,181	5,602
Stock-based compensation expenses	3,717	4,150	3,509
Amortization of deferred costs	4,271	4,307	4,319
Amortization of interest rate derivative cost			(499)
Allowances and provisions	(571)	697	(81)
Gain on sale of leased equipment	(3,482)	(8,320)	(5,882)
Income from joint ventures	(1,813)	(1,175)	(1,329)
Loss (gain) on extinguishment of debt	137	(1,151)
Deferred income taxes	9,100	6,027	4,110
Changes in assets and liabilities:
Receivables	(2,287)	(5,769)	4,812
Spare parts inventory	(5,093)	3,828	(5,964)
Intangibles	(1,511)
Other assets	(1,707)	(2,635)	(590)
Accounts payable and accrued expenses	2,329	1,677	(1,998)
Restricted cash	10,728	9,636	(6,831)
Maintenance reserves	548	4,580	(10,861)
Security deposits	(4,048)	5,747	1,158
Unearned lease revenue	732	748	793
Net cash provided by operating activities	100,913	107,412	62,762
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	62,525	41,608	43,632
Restricted cash for investing activities	(1,345)	(16,763)	6,366
Capital contribution to joint ventures	(5,545)	(630)	(17,623)
Distributions received from joint ventures	1,167	1,304	847
Maintenance rights payments received		5,802
Purchase of equipment held for operating lease and for sale	(173,662)	(174,772)	(119,008)
Purchase of maintenance rights	(5,530)	(8,844)	(9,098)
Purchase of property, equipment and furnishings	(1,006)	(3,988)	(13,831)
Net cash used in investing activities	(123,396)	(156,283)	(108,715)
Cash flows from financing activities:
Proceeds from issuance of notes payable	149,000	192,700	154,395
Debt issuance cost	(3,808)	(13)	(5,074)
Interest bearing security deposit	455	(1,606)	4,553
Proceeds from shares issued under stock compensation plans	155	518	410
Cancellation of restricted stock units in satisfaction of withholding tax	(1,369)	(1,558)	(1,544)
Repurchase of common stock	(28,958)	(16,500)	(5,352)
Excess tax benefit from stock-based compensation	236	26	311
Proceeds from issuance of preferred stock	19,752
Principal payments on notes payable	(113,981)	(153,816)	(101,054)
Restricted cash from financing activities	1,345	25,359
Net cash provided by (used in) financing activities	22,827	45,110	46,645
Increase/(Decrease) in cash and cash equivalents	344	(3,761)	692
Cash and cash equivalents at beginning of period	9,732	13,493	12,801
Cash and cash equivalents at end of period	10,076	9,732	13,493
Net cash paid for:
Interest	37,319	35,568	33,132
Income Taxes	459	353	210
Supplemental disclosures of non-cash investing activities:
Purchase of aircraft and engines, liability incurred but not paid	5,337	4,662	8,188
Engines and equipment, transferred from Held for Operating Lease to Held for Sale but not settled	28,560	22,079	3,071
Equipment held for sale, transferred to spare parts inventory	0	$ 6,061	$ 9,649
Transfer from property, equipment and furnishings to assets held for lease	2,925
Temporary Equity, Dividends, Adjustment	281
Temporary Equity, Accretion to Redemption Value, Adjustment	$ 8