Segment Information (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 segments	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of reportable segments (in segments)	2
Interest expense	$ 13,937,000	$ 14,249,000	$ 14,383,000
Impairment of goodwill	0	(52,585,000)	0
Customer Revenues [Member]
Segment Reporting Information [Line Items]
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	205005	235125	314204
ACMI Services [Member]
Segment Reporting Information [Line Items]
Interest expense	200,000	600,000	900,000
Property, Plant and Equipment, Additions	44,600,000
Impairment of goodwill	0	(52,585,000)	0
CAM [Member]
Segment Reporting Information [Line Items]
Interest expense	11,800,000	12,400,000	12,200,000
Property, Plant and Equipment, Additions	66,300,000
Impairment of goodwill	$ 0	$ 0