Note 12 - Segment Information - Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating income	$ 334,294	$ 207,652
Segment Reconciling Items [Member]
Operating income	(100)	(100)
JBI [Member] | Operating Segments [Member]
Operating income	201,000	107,500
DCS [Member] | Operating Segments [Member]
Operating income	77,100	74,300
ICS [Member] | Operating Segments [Member]
Operating income	25,000	7,300
JBT [Member] | Operating Segments [Member]
Operating income	31,500	10,200
FMS [Member] | Operating Segments [Member]
Operating income	$ (200)	$ 8,500