Segment Information (Segment Reconciliation) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Operating Expenses	$ 444,257,000	$ 366,195,000	$ 1,299,474,000	$ 1,010,677,000
REVENUES	516,916,000	465,955,000	1,512,444,000	1,251,915,000
Customer revenues	516,916,000	465,955,000	1,512,444,000	1,251,915,000
Depreciation and amortization expense	83,283,000	77,751,000	246,726,000	224,435,000
Net unallocated interest expense	(12,167,000)	(14,459,000)	(33,027,000)	(44,002,000)
Net gain (loss) on financial instruments	695,000	(7,378,000)	9,402,000	37,797,000
Pre-tax earnings from continuing operations	64,924,000	81,241,000	199,259,000	240,569,000
Assets	3,525,165,000		3,525,165,000		$ 3,267,335,000
Income Tax Expense (Benefit)		18,878,000	45,065,000	56,047,000
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	4,635,000	4,457,000	15,411,000	13,370,000
Net earnings from continuing operations	50,188,000	62,363,000	154,194,000	184,522,000
Income Tax (Expense) Benefit, Continuing Operations, Government Grants	0	(30,322,000)	0	(96,626,000)
Write off of Deferred Debt Issuance Cost	0	0	0	(6,505,000)
Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	516,916,000	465,955,000	1,512,444,000	1,251,915,000
Customer revenues	516,916,000	465,955,000	1,512,444,000	1,251,915,000
ACMI Services [Member]
Segment Reporting Information [Line Items]
REVENUES	357,375,000	330,906,000	1,034,963,000	851,338,000
Customer revenues	357,375,000	330,906,000	1,034,963,000	851,338,000
Depreciation and amortization expense	23,447,000	25,649,000	72,885,000	73,398,000
Segment earnings (loss)	25,265,000	58,225,000	69,267,000	124,246,000
Net unallocated interest expense	(3,693,000)	(4,672,000)	(9,719,000)	(13,668,000)
Assets	959,801,000		959,801,000		872,311,000
ACMI Services [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	357,319,000	330,903,000	1,034,881,000	851,325,000
Customer revenues	357,319,000	330,903,000	1,034,881,000	851,325,000
All other [Member]
Segment Reporting Information [Line Items]
REVENUES	108,423,000	90,292,000	318,837,000	281,226,000
Customer revenues	108,423,000	90,292,000	318,837,000	281,226,000
Depreciation and amortization expense	605,000	719,000	1,898,000	2,647,000
Segment earnings (loss)	(1,182,000)	(1,047,000)	560,000	2,503,000
Assets	137,584,000		137,584,000		177,012,000
All other [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	79,622,000	63,982,000	240,097,000	202,044,000
Customer revenues	79,622,000	63,982,000	240,097,000	202,044,000
CAM [Member]
Segment Reporting Information [Line Items]
REVENUES	109,496,000	92,931,000	326,075,000	264,802,000
Customer revenues	109,496,000	92,931,000	326,075,000	264,802,000
Depreciation and amortization expense	59,231,000	51,383,000	171,943,000	148,390,000
Segment earnings (loss)	36,975,000	28,502,000	111,587,000	72,518,000
Net unallocated interest expense	(7,908,000)	(9,408,000)	(21,837,000)	(28,303,000)
Assets	2,427,780,000		2,427,780,000		$ 2,218,012,000
CAM [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	79,975,000	71,070,000	237,466,000	198,546,000
Customer revenues	79,975,000	71,070,000	237,466,000	198,546,000
Significant Reconciling Items [Member]
Segment Reporting Information [Line Items]
Net unallocated interest expense	(510,000)	(371,000)	(1,391,000)	(1,995,000)
Loss from non-consolidated affiliates	(954,000)	(1,147,000)	(5,577,000)	(1,365,000)
Eliminate inter-segment revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	(58,378,000)	(48,174,000)	(167,431,000)	(145,451,000)
Customer revenues	(58,378,000)	(48,174,000)	(167,431,000)	(145,451,000)
Accounting Standards Update 2014-09 [Member]
Segment Reporting Information [Line Items]
Income Tax Expense (Benefit)	(14,736,000)
Accounting Standards Update 2014-09 [Member] | Ground Services [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	34,604,000	28,513,000	106,766,000	91,352,000
Customer revenues	34,604,000	28,513,000	106,766,000	91,352,000
Accounting Standards Update 2014-09 [Member] | All other [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	79,622,000	63,982,000	240,097,000	202,044,000
Customer revenues	79,622,000	63,982,000	240,097,000	202,044,000
Accounting Standards Update 2014-09 [Member] | Ground Services [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	28,204,000	22,928,000	80,275,000	75,410,000
Customer revenues	28,204,000	22,928,000	80,275,000	75,410,000
Accounting Standards Update 2014-09 [Member] | All Other non MRO or Ground Services [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	16,814,000	12,541,000	53,056,000	35,282,000
Customer revenues	$ 16,814,000	$ 12,541,000	$ 53,056,000	$ 35,282,000