Goodwill and Other Intangibles (Schedule of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jul. 31, 2011
Goodwill [Roll Forward]
Carrying value, beginning balance		$ 86,980	$ 89,777
Impairment		0	(2,797)	0
Carrying value, ending balance		86,980	86,980	89,777
ACMI Services [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance		52,585	55,382		52,600
Impairment	2,800	0	(2,797)	0
Carrying value, ending balance		52,585	52,585	55,382	52,600
CAM [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance			34,395
Impairment			0
Carrying value, ending balance		$ 34,395	$ 34,395