Goodwill and Other Intangibles (Schedule Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 ReportingUnits
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]
Number of business units reporting goodwill (in reporting units)	2
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	$ 5,146
Carrying value at end of period	5,083
ACMI Services [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	5,146
Amortization expense	(63)
Carrying value at end of period	5,083
ACMI Services [Member] | Customer Relationships [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	2,146
Amortization expense	(63)
Carrying value at end of period	2,083
Intangibles useful life	8 years
ACMI Services [Member] | Airline Certificates [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	3,000
Amortization expense	0
Carrying value at end of period	$ 3,000