Segment Information (Narrative) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 segments	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Number of reportable segments (in segments)									2
Interest expense									$ 14,383,000	$ 14,181,000	$ 18,675,000
Impairment of goodwill									0	2,797,000	0
Impairment of aircraft									0	22,065,000	0
Impairment of acquired intangibles									0	2,282,000	0
Customer revenues	154,552,000	153,826,000	153,554,000	145,506,000	166,465,000	195,480,000	193,061,000	175,127,000	607,438,000	730,133,000	667,382,000
ACMI Services [Member]
Segment Reporting Information [Line Items]
Interest expense									900,000	1,200,000	1,900,000
Capital expenditures									20,400,000
Impairment of goodwill						(2,800,000)			0	2,797,000	0
Impairment of aircraft						(15,300,000)			0	15,304,000	0
Impairment of acquired intangibles						(2,300,000)			0	2,282,000	0
Customer revenues									477,722,000	604,951,000	578,198,000
CAM [Member]
Segment Reporting Information [Line Items]
Interest expense									12,200,000	10,700,000	9,300,000
Capital expenditures									126,500,000
Impairment of goodwill										0
Impairment of aircraft						(6,800,000)			0	6,761,000	0
Customer revenues									74,599,000	67,791,000	43,294,000
International [Member]
Segment Reporting Information [Line Items]
Customer revenues									$ 314,200,000	$ 291,300,000	$ 234,500,000