Reportable Segments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) segment		Dec. 31, 2022 USD ($)
Reportable Segments
Number of operating segments | segment	2
Revenue:
Interest income	$ 8,721		$ 7,579
Gain on sale of leased equipment	10,581		3,133
Gain on sale of financial assets	0		3,116
Total revenue	418,555		311,927
Expenses:
Depreciation and amortization expense	90,925		88,260
Cost of spare parts and equipment sales	15,207		20,833
Write-down of equipment	4,398		21,849
General and administrative	144,788		92,530
Technical expense	20,220		14,415
Interest expense	78,795		66,743
Total finance costs	78,795		64,185
Total expenses	354,333		302,072
Income from operations	64,222		9,855
Total assets	2,652,344	[1]	2,575,217
Gain on debt extinguishment	0		(2,558)
Eliminations
Revenue:
Interest income	0		0
Gain on sale of leased equipment	0		0
Gain on sale of financial assets	0		0
Total revenue	(211)		(185)
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		0
Technical expense	0		0
Interest expense	0		0
Total finance costs	0		0
Total expenses	0		0
Income from operations	(211)		(185)
Total assets	0		0
Gain on debt extinguishment			0
Leasing and  Related Operations | Operating Segments
Revenue:
Interest income	8,721		7,579
Gain on sale of leased equipment	10,581		3,133
Gain on sale of financial assets	0		3,116
Total revenue	398,194		286,025
Expenses:
Depreciation and amortization expense	90,834		88,124
Cost of spare parts and equipment sales	56		96
Write-down of equipment	4,398		21,849
General and administrative	139,867		87,996
Technical expense	20,220		14,415
Interest expense	78,795		66,743
Total finance costs	78,795		64,185
Total expenses	334,170		276,665
Income from operations	64,024		9,360
Total assets	2,602,907		2,530,130
Gain on debt extinguishment			(2,558)
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	20,572		26,087
Expenses:
Depreciation and amortization expense	91		136
Cost of spare parts and equipment sales	15,151		20,737
Write-down of equipment	0		0
General and administrative	4,921		4,534
Technical expense	0		0
Interest expense	0		0
Total finance costs	0		0
Total expenses	20,163		25,407
Income from operations	409		680
Total assets	49,437		45,087
Gain on debt extinguishment			0
Lease rent revenue
Revenue:
Lease rent revenue	213,138		162,571
Lease rent revenue | Eliminations
Revenue:
Lease rent revenue	0		0
Lease rent revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Lease rent revenue	213,138		162,571
Lease rent revenue | Spare Parts Sales | Operating Segments
Revenue:
Lease rent revenue	0		0
Maintenance reserve revenue
Revenue:
Lease rent revenue	133,668		83,424
Maintenance reserve revenue | Eliminations
Revenue:
Lease rent revenue	0		0
Maintenance reserve revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Lease rent revenue	133,668		83,424
Maintenance reserve revenue | Spare Parts Sales | Operating Segments
Revenue:
Lease rent revenue	0		0
Spare parts and equipment sales
Revenue:
Other sales and revenues	20,359		27,009
Spare parts and equipment sales | Eliminations
Revenue:
Other sales and revenues	0		0
Spare parts and equipment sales | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues	476		1,595
Spare parts and equipment sales | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues	19,883		25,414
Other revenue
Revenue:
Other sales and revenues	32,088		25,095
Other revenue | Eliminations
Revenue:
Other sales and revenues	(211)		(185)
Other revenue | Leasing and  Related Operations | Operating Segments
Revenue:
Other sales and revenues	31,610		24,607
Other revenue | Spare Parts Sales | Operating Segments
Revenue:
Other sales and revenues	$ 689		$ 673

[1] Total assets at December 31, 2023 and 2022 include the following assets of variable interest entities (“VIEs”) that can only be used to settle the liabilities of the VIEs: Restricted cash $160,958 and $76,870; Equipment $1,518,050 and $1,167,970; Maintenance rights $7,806 and $5,433; Notes receivable $91,960 and $80,220; Investments in sales-type leases $3,564 and $0; and Other assets $13,339 and $6,470, respectively.