Note N - Segment and Revenue Information (Details Textual) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Number of Reportable Segments	2
Contract with Customer, Liability, Revenue Recognized	$ 3,900	$ 6,500
Contract with Customer, Liability	9,100		$ 4,500
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent	8,200		$ 8,700
Revenues	485,517	501,095
Incentive to Lessee, Amortization	$ 3,912
Cam [Member]
Percentage of Leases With Purchase Options	16.00%
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year	$ 217,400
Lessor, Operating Lease, Payment to be Received, Year One	267,000
Lessor, Operating Lease, Payment to be Received, Year Two	235,100
Lessor, Operating Lease, Payment to be Received, Year Three	206,800
Lessor, Operating Lease, Payment to be Received, Year Four	171,900
Lessor, Operating Lease, Payment to be Received, after Year Four	254,300
Incentive to Lessee, Amortization	3,100	5,000
Cam [Member] | Non Lease Activities [Member]
Revenues	4,800	6,700
ACMI Services [Member]
Incentive to Lessee, Amortization	800	800
Segment, Expenditure, Addition to Long-Lived Assets	$ 20,700	$ 82,100