Reportable Segments (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2021 USD ($) noteReceivable segment.	Dec. 31, 2020 USD ($)
Reportable Segments
Number of operating segments | segment.		2
Revenue:
Gain on sale of leased equipment		$ 5,975	$ 3,391
Gain on sale of financial assets		10,874	0
Total revenue		274,202	288,692
Expenses:
Depreciation and amortization expense		90,504	94,541
Cost of spare parts and equipment sales		14,927	16,762
Write-down of equipment		7,715	20,540
General and administrative		75,350	67,910
Technical expense		9,381	6,533
Interest expense		67,985	63,024
Loss on extinguishment of debt		0	4,688
Net finance costs		67,985	67,712
Total expenses		265,862	273,998
Earnings (loss) from operations		$ 8,340	14,694
Number notes receivable sold | noteReceivable		2
Total assets	[1]	$ 2,462,927	2,364,948
Eliminations
Revenue:
Gain on sale of leased equipment		0	0
Gain on sale of financial assets		0
Total revenue		(147)	(718)
Expenses:
Depreciation and amortization expense		0	0
Cost of spare parts and equipment sales		0	0
Write-down of equipment		0	0
General and administrative		(10)	403
Technical expense		0	0
Interest expense		0	0
Loss on extinguishment of debt			0
Net finance costs		0	0
Total expenses		(10)	403
Earnings (loss) from operations		(137)	(1,121)
Total assets		0	0
Leasing and  Related Operations | Operating Segments
Revenue:
Gain on sale of leased equipment		5,975	3,391
Gain on sale of financial assets		10,874
Total revenue		256,784	271,569
Expenses:
Depreciation and amortization expense		90,391	94,442
Cost of spare parts and equipment sales		29	156
Write-down of equipment		7,715	20,540
General and administrative		72,333	63,993
Technical expense		9,381	6,533
Interest expense		67,985	63,024
Loss on extinguishment of debt			4,688
Net finance costs		67,985	67,712
Total expenses		247,834	253,376
Earnings (loss) from operations		8,950	18,193
Total assets		2,415,635	2,312,172
Spare Parts Sales | Operating Segments
Revenue:
Gain on sale of leased equipment		0	0
Gain on sale of financial assets		0
Total revenue		17,565	17,841
Expenses:
Depreciation and amortization expense		113	99
Cost of spare parts and equipment sales		14,898	16,606
Write-down of equipment		0	0
General and administrative		3,027	3,514
Technical expense		0	0
Interest expense		0	0
Loss on extinguishment of debt			0
Net finance costs		0	0
Total expenses		18,038	20,219
Earnings (loss) from operations		(473)	(2,378)
Total assets		47,292	52,776
Lease rent revenue
Revenue:
Lease rent revenue		134,831	142,895
Lease rent revenue | Eliminations
Revenue:
Lease rent revenue		0	0
Lease rent revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Lease rent revenue		134,831	142,895
Lease rent revenue | Spare Parts Sales | Operating Segments
Revenue:
Lease rent revenue		0	0
Maintenance reserve revenue
Revenue:
Lease rent revenue		73,961	105,365
Maintenance reserve revenue | Eliminations
Revenue:
Lease rent revenue		0	0
Maintenance reserve revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Lease rent revenue		73,961	105,365
Maintenance reserve revenue | Spare Parts Sales | Operating Segments
Revenue:
Lease rent revenue		0	0
Spare parts and equipment sales
Revenue:
Other sales and revenues		17,417	18,625
Spare parts and equipment sales | Eliminations
Revenue:
Other sales and revenues		10	(403)
Spare parts and equipment sales | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues		365	1,514
Spare parts and equipment sales | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues		17,042	17,514
Asset transition fee
Revenue:
Other sales and revenues		6,256	0
Asset transition fee | Eliminations
Revenue:
Other sales and revenues		0
Asset transition fee | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues		6,256
Asset transition fee | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues		0
Other revenue
Revenue:
Other sales and revenues		24,888	18,416
Other revenue | Eliminations
Revenue:
Other sales and revenues		(157)	(315)
Other revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues		24,522	18,404
Other revenue | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues		$ 523	$ 327

[1] Total assets at December 31, 2021 and 2020 include the following assets of variable interest entity’s (“VIE’s”) that can only be used to settle the liabilities of the VIE’s: Restricted cash $81,312 and $35,262; Equipment $1,226,395 and $1,037,684; Maintenance rights $5,433 and $767; Inventory $4,367 and $5,437; Notes receivable $90,868 and $26,392; and Other assets $4,775 and $558, respectively.