Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 11,302	$ 6,518
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	27,801	24,996
Write-down of equipment	1,985	282
Stock-based compensation expenses	1,715	1,603
Amortization of deferred costs	2,073	1,888
Amortization of loan discount		243
Amortization of interest rate derivative cost	(199)	(111)
Allowances and provisions	(596)	(23)
Gain on sale of leased equipment	(1,534)	(3,996)
Income from joint ventures, net of distributions	(3,475)	(320)
Deferred income taxes	(6,798)	3,891
Changes in assets and liabilities:
Receivables	4,738	(98)
Notes receivable		537
Other assets	(812)	105
Accounts payable and accrued expenses	4,723	(1,698)
Restricted cash	(8,538)	(7,658)
Maintenance reserves	7,180	7,253
Security deposits	(534)	294
Unearned lease revenue	(463)	160
Net cash provided by operating activities	38,568	33,866
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	10,093	29,051
Restricted cash for investing activities	(2,208)	(969)
Capital contribution to joint ventures	(6,145)	(2,868)
Purchase of equipment held for operating lease	(92,111)	(24,913)
Purchase of property, equipment and furnishings	(375)	(1,030)
Net cash used in investing activities	(90,746)	(729)
Cash flows from financing activities:
Proceeds from issuance of notes payable	69,000	20,000
Debt issuance cost	(592)	(553)
Interest bearing security deposits	4,553
Preferred stock dividends		(1,564)
Proceeds from shares issued under stock compensation plans	506	1,227
Cancellation of restricted stock units in satisfaction of withholding tax	(480)	(603)
Excess tax benefit from stock-based compensation		685
Repurchase of common stock	(358)	(1,793)
Principal payments on notes payable	(21,490)	(52,402)
Net cash provided by (used in) financing activities	51,139	(35,003)
Decrease in cash and cash equivalents	(1,039)	(1,866)
Cash and cash equivalents at beginning of period	5,379	6,440
Cash and cash equivalents at end of period	4,340	4,574
Net cash paid for:
Interest	16,832	9,376
Income Taxes	16	65
Supplemental disclosures of non-cash investing activities:
Engines and equipment, transferred from Held for Operating Lease to Held for Sale but not settled	$ 2,063	$ 3,208