Note 11 - Business Segments - Operating Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating income (loss)	$ 1,331,553	$ 1,045,530	$ 713,119
Operating Segments [Member] | JBI [Member]
Operating income (loss)	800,000	603,000	428,000
Operating Segments [Member] | DCS [Member]
Operating income (loss)	345,000	304,000	314,000
Operating Segments [Member] | ICS [Member]
Operating income (loss)	59,000	46,000	(45,000)
Operating Segments [Member] | JBT [Member]
Operating income (loss)	93,000	65,000	17,000
Operating Segments [Member] | FMS [Member]
Operating income (loss)	$ 35,000	$ 28,000	$ (1,000)