Goodwill and Other Intangibles (Schedule Intangible Assets) (Details) (ACMI Services [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	$ 4,896	$ 5,146
Amortization expense	(281)	(250)
Carrying value at end of period	4,615	4,896
Customer Relationships [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	1,896	2,146
Amortization expense	(281)	(250)	(300)
Carrying value at end of period	1,615	1,896	2,146
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