Goodwill and Other Intangibles (Schedule of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Carrying value, beginning balance	$ 34,395	$ 86,980
Impairment	0	(52,585)	0
Carrying value, ending balance	34,395	34,395	86,980
ACMI Services [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	0	52,585
Impairment	0	(52,585)	0
Carrying value, ending balance	0	0	52,585
CAM [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	34,395	34,395
Impairment	0	0
Carrying value, ending balance	$ 34,395	$ 34,395