Reportable Segments (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)
Reportable Segments
Number of operating segments | segment		2
Revenue:
Interest income		$ 7,579	$ 12,938
Gain on sale of leased equipment		3,133	5,975
Gain on sale of financial assets		3,116	10,874
Total revenue		311,927	274,202
Expenses:
Depreciation and amortization expense		88,260	90,504
Cost of spare parts and equipment sales		20,833	14,927
Write-down of equipment		21,849	7,715
General and administrative		92,530	75,350
Technical expense		14,415	9,381
Interest expense		66,743	67,985
Gain on debt extinguishment		(2,558)	0
Total finance costs		64,185	67,985
Total expenses		302,072	265,862
Income from operations		9,855	8,340
Total assets	[1]	2,575,217	2,462,927
Eliminations
Revenue:
Interest income		0	0
Gain on sale of leased equipment		0	0
Gain on sale of financial assets		0	0
Total revenue		(185)	(147)
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		0	(10)
Technical expense		0	0
Interest expense		0	0
Gain on debt extinguishment		0
Total finance costs		0	0
Total expenses		0	(10)
Income from operations		(185)	(137)
Total assets		0	0
Leasing and  Related Operations | Operating Segments
Revenue:
Interest income		7,579	12,938
Gain on sale of leased equipment		3,133	5,975
Gain on sale of financial assets		3,116	10,874
Total revenue		286,025	256,784
Expenses:
Depreciation and amortization expense		88,124	90,391
Cost of spare parts and equipment sales		96	29
Write-down of equipment		21,849	7,715
General and administrative		87,996	72,333
Technical expense		14,415	9,381
Interest expense		66,743	67,985
Gain on debt extinguishment		(2,558)
Total finance costs		64,185	67,985
Total expenses		276,665	247,834
Income from operations		9,360	8,950
Total assets		2,530,130	2,415,635
Spare Parts Sales | Operating Segments
Revenue:
Interest income		0	0
Gain on sale of leased equipment		0	0
Gain on sale of financial assets		0	0
Total revenue		26,087	17,565
Expenses:
Depreciation and amortization expense		136	113
Cost of spare parts and equipment sales		20,737	14,898
Write-down of equipment		0	0
General and administrative		4,534	3,027
Technical expense		0	0
Interest expense		0	0
Gain on debt extinguishment		0
Total finance costs		0	0
Total expenses		25,407	18,038
Income from operations		680	(473)
Total assets		45,087	47,292
Lease rent revenue
Revenue:
Lease rent revenue		162,571	134,831
Lease rent revenue | Eliminations
Revenue:
Lease rent revenue		0	0
Lease rent revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Lease rent revenue		162,571	134,831
Lease rent revenue | Spare Parts Sales | Operating Segments
Revenue:
Lease rent revenue		0	0
Maintenance reserve revenue
Revenue:
Lease rent revenue		83,424	73,961
Maintenance reserve revenue | Eliminations
Revenue:
Lease rent revenue		0	0
Maintenance reserve revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Lease rent revenue		83,424	73,961
Maintenance reserve revenue | Spare Parts Sales | Operating Segments
Revenue:
Lease rent revenue		0	0
Spare parts and equipment sales
Revenue:
Other sales and revenues		27,009	17,417
Spare parts and equipment sales | Eliminations
Revenue:
Other sales and revenues		0	(10)
Spare parts and equipment sales | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues		1,595	365
Spare parts and equipment sales | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues		25,414	17,042
Asset transition fee
Revenue:
Other sales and revenues		0	6,256
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		25,095	11,950
Other revenue | Eliminations
Revenue:
Other sales and revenues		(185)	(157)
Other revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues		24,607	11,584
Other revenue | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues		$ 673	$ 523

[1] Total assets at December 31, 2022 and 2021 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 $76,870 and $81,312; Equipment $1,167,970 and $1,226,395; Maintenance rights $5,433 and $5,433; Inventory $0 and $4,367; Notes receivable $80,220 and $90,868; and Other assets $6,470 and $4,775, respectively.