Note N - Segment and Revenue Information (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Number of Reportable Segments			2
Contract with Customer, Liability, Revenue Recognized, Amount	$ 3,300	$ 12,200	$ 4,800	$ 6,500
Contract with Customer, Liability	14,800		14,800		$ 4,500
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent	6,200		6,200		$ 8,700
Revenues	$ 488,410	529,339	$ 973,927	1,030,434
Cam [Member]
Percentage of Leases With Purchase Options	17.00%		17.00%
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year	$ 146,600		$ 146,600
Lessor, Operating Lease, Payment to be Received, Year One	272,500		272,500
Lessor, Operating Lease, Payment to be Received, Year Two	247,700		247,700
Lessor, Operating Lease, Payment to be Received, Year Three	218,700		218,700
Lessor, Operating Lease, Payment to be Received, Year Four	183,800		183,800
Lessor, Operating Lease, Payment to be Received, after Year Four	267,100		267,100
Segment, Expenditure, Addition to Long-Lived Assets			131,500
Cam [Member] | Non Lease Activities [Member]
Revenues	$ 5,000	$ 8,700	9,900	$ 15,400
ACMI Services [Member]
Segment, Expenditure, Addition to Long-Lived Assets			$ 41,900