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Note 10 - Business Segments - Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating income	$ 273,829	$ 175,503	$ 723,027	$ 505,427
Segment Reconciling Items [Member]
Operating income	(100)	0	(300)	(100)
JBI [Member] | Operating Segments [Member]
Operating income	165,100	108,400	407,200	317,700
DCS [Member] | Operating Segments [Member]
Operating income	78,100	80,400	231,500	236,400
ICS [Member] | Operating Segments [Member]
Operating income	14,700	(18,300)	25,100	(50,300)
FMS [Member] | Operating Segments [Member]
Operating income	1,300	2,100	20,500	(6,500)
JBT [Member] | Operating Segments [Member]
Operating income	$ 14,700	$ 2,900	$ 39,000	$ 8,200

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

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