SCHEDULE I - Parent Company Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
REVENUE
Lease rent revenue													$ 101,737	$ 94,591	$ 104,663
Maintenance reserve revenue													46,694	41,387	39,161
Gain on sale of leased equipment													5,675	5,499	11,110
Other revenue													4,306	6,613	1,719
Total revenue	47,203	37,952	37,953	35,304	39,692	37,506	35,153	35,739	37,669	39,480	38,692	40,812	158,412	148,090	156,653
EXPENSES
Depreciation expense													58,727	52,591	51,250
Write-down of equipment													6,461	5,874	3,341
General and administrative													33,868	34,551	35,701
Technical expense													12,863	7,006	8,394
Net finance costs:
Interest expense													38,719	31,749	35,201
Interest income														(80)	(167)
Loss on debt extinguishment														15,462	343
Total net finance costs													38,719	47,131	35,377
Total expenses													150,638	147,153	134,063
Earnings from operations													7,774	937	22,590
Earnings from joint ventures													3,526	1,759	1,295
Income before income taxes													11,300	2,696	23,885
Income tax benefit/(expense)													4,326	(1,161)	(9,377)
Net income	6,553	(2,229)	9,692	1,610	2,211	(7,194)	3,229	3,289	3,648	2,316	3,481	5,063	15,626	1,535	14,508
Preferred stock dividends														2,493	3,128
Preferred stock redemption costs														2,835
Net income (loss) attributable to common shareholders	6,553	(2,229)	9,692	1,610	(771)	(7,976)	2,447	2,507	2,866	1,534	2,699	4,281	15,626	(3,793)	11,380
Parent Company
REVENUE
Lease rent revenue													36,593	30,564	36,181
Maintenance reserve revenue													14,046	13,139	11,344
Gain on sale of leased equipment													3,472	3,605	7,895
Other revenue													8,022	10,809	12,487
Total revenue													62,133	58,117	67,907
EXPENSES
Depreciation expense													19,699	18,764	17,783
Write-down of equipment													4,204	2,621	2,306
General and administrative													29,907	30,565	34,151
Technical expense													5,478	3,336	3,711
Net finance costs:
Interest expense													15,030	11,471	14,328
Interest income															(40)
Loss on debt extinguishment														94	343
Total net finance costs													15,030	11,565	14,631
Total expenses													74,318	66,851	72,582
Earnings from operations													(12,185)	(8,734)	(4,675)
Earnings from joint ventures													3,526	1,759	1,295
Income before income taxes													(8,659)	(6,975)	(3,380)
Income tax benefit/(expense)													4,525	2,196	(628)
Equity in income of subsidiaries, net of tax of $199, $3,357, and $8,749 at December 31, 2013, 2012 and 2011, respectively													19,760	6,314	18,516
Net income													15,626	1,535	14,508
Preferred stock dividends														2,493	3,128
Preferred stock redemption costs														2,835
Net income (loss) attributable to common shareholders													$ 15,626	$ (3,793)	$ 11,380