Note 9 - Business Segments - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 2,944,001	$ 3,229,588
Operating Segments [Member]
Revenues	2,948,000	3,235,000
Operating Segments [Member] | JBI [Member]
Revenues	1,396,000	1,540,000
Operating Segments [Member] | DCS [Member]
Revenues	860,000	879,000
Operating Segments [Member] | ICS [Member]
Revenues	285,000	385,000
Operating Segments [Member] | FMS [Member]
Revenues	229,000	225,000
Operating Segments [Member] | JBT [Member]
Revenues	178,000	206,000
Intersegment Eliminations [Member]
Revenues	$ (4,000)	$ (5,000)