Segment and Revenue Information - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
Deferred revenue recognized	$ 12,200	$ 3,300	$ 6,500	$ 3,900
Deferred revenue	9,900		9,900		$ 17,000
Deposit contract, assets	$ 700		$ 700		$ 0
Percentage of leases with purchase options	10.00%		10.00%
Lessor, operating lease, payment to be received, year one	$ 141,400		$ 141,400
Lessor, operating lease, payment to be received, year two	247,300		247,300
Lessor, operating lease, payment to be received, year three	227,200		227,200
Lessor, operating lease, payment to be received, year four	203,500		203,500
Lessor, operating lease, payment to be received, year five	172,300		172,300
Lessor, operating lease, payment to be received, after year five	313,900		313,900
Revenues	529,339	509,668	1,030,434	995,528
Expenditures for property and equipment			412,925	294,210
Incentive To Lessee, Amortization			(10,541)
ACMI Services
Segment Reporting Information [Line Items]
Revenues	366,187	347,498	700,314	677,588
Expenditures for property and equipment			47,400
Incentive To Lessee, Amortization	800	800	1,600	1,600
CAM
Segment Reporting Information [Line Items]
Revenues	111,378	109,674	223,422	216,579
Expenditures for property and equipment			363,500
Incentive To Lessee, Amortization	3,900	5,000	8,900	10,100
CAM | Non-Lease Activities
Segment Reporting Information [Line Items]
Revenues	8,700	7,400	15,400	17,300
Customer revenues
Segment Reporting Information [Line Items]
Revenues	529,339	509,668	1,030,434	995,528
Customer revenues | ACMI Services
Segment Reporting Information [Line Items]
Revenues	366,179	347,478	700,292	677,562
Customer revenues | CAM
Segment Reporting Information [Line Items]
Revenues	$ 84,194	$ 80,800	$ 167,352	$ 157,491