Goodwill and Other Intangibles (Schedule of Goodwill) (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Carrying value, beginning balance	$ 395,974,000	$ 395,974,000
Carrying value, ending balance	395,974,000
ACMI Services [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	234,571,000	234,571,000
Carrying value, ending balance	234,571,000
CAM [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	153,290,000	153,290,000
Carrying value, ending balance	153,290,000
MRO Services [Member] [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	8,113,000	$ 8,113,000
Carrying value, ending balance	$ 8,113,000