Goodwill and Other Intangibles (Schedule Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Below Market Lease, Amortization Income, Next Twelve Months	$ 23,300
Incentive to Lessee	102,913	$ 126,007	$ 146,678
Amortization of Lease Incentives	(23,094)	(20,671)
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	111,316	122,680
Carrying value at beginning of period	120,316	131,680
Amortization expense	(11,165)	(11,364)
Carrying value at end of period	100,151	111,316	122,680
Carrying value at end of period	109,151	120,316	131,680
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	12,500
Finite-Lived Intangible Assets, Amortization Expense, Year Two	10,200
Finite-Lived Intangible Assets, Amortization Expense, Year Three	10,200
Finite-Lived Intangible Assets, Amortization Expense, Year Four	9,400
Finite-Lived Intangible Assets, Amortization Expense, Year Five	4,500
Below Market Lease, Amortization Income, Year Two	18,700
Below Market Lease, Amortization Income, Year Three	15,700
Below Market Lease, Amortization Income, Year Four	15,800
Below Market Lease, Amortization Income, Year Five	12,800
ACMI Services [Member] | Customer Relationships [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Amortization expense	(11,200)	(11,400)	(11,400)
ACMI Services [Member] | Airline Certificates [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	9,000	9,000
Amortization expense	0	0
Carrying value at end of period	$ 9,000	$ 9,000	$ 9,000