Goodwill and Other Intangibles (Schedule Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 30, 2016	Dec. 31, 2015
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Below Market Lease, Amortization Income, Next Twelve Months				$ 9,100
Incentive to Lessee				54,730		$ 0
Warranted granted adding to lease incentive intangible	$ 59,236
Amortization of Lease Incentives	(4,506)
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	1,334	$ 1,615
Carrying value at beginning of period	4,334	4,615
Amortization expense	(281)	(281)
Carrying value at end of period	1,334	1,615	$ 1,615	5,453	$ 4,400	$ 1,334
Carrying value at end of period	8,453	4,334	4,615
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months				1,200
Finite-Lived Intangible Assets, Amortization Expense, Year Two				1,200
Finite-Lived Intangible Assets, Amortization Expense, Year Three				1,200
Finite-Lived Intangible Assets, Amortization Expense, Year Four				1,100
Finite-Lived Intangible Assets, Amortization Expense, Year Five				300
Below Market Lease, Amortization Income, Year Two				9,900
Below Market Lease, Amortization Income, Year Three				9,900
Below Market Lease, Amortization Income, Year Four				9,900
Below Market Lease, Amortization Income, Year Five				$ 6,900
ACMI Services [Member] | Customer Relationships [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Amortization expense	(281)	(281)	(300)
ACMI Services [Member] | Airline Certificates [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	3,000	3,000
Amortization expense	0	0
Carrying value at end of period	$ 3,000	$ 3,000	$ 3,000