Note 11 - Business Segments - Depreciation and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Depreciation and amortization	$ 644,520	$ 557,093	$ 527,375
Operating Segments [Member] | JBI [Member]
Depreciation and amortization	226,000	198,000	189,000
Operating Segments [Member] | DCS [Member]
Depreciation and amortization	269,000	233,000	224,000
Operating Segments [Member] | ICS [Member]
Depreciation and amortization	3,000	0	0
Operating Segments [Member] | JBT [Member]
Depreciation and amortization	45,000	36,000	34,000
Operating Segments [Member] | FMS [Member]
Depreciation and amortization	44,000	35,000	33,000
Segment Reconciling Items [Member]
Depreciation and amortization	$ 58,000	$ 55,000	$ 47,000