Note 13 - Segment Information - Depreciation and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Depreciation and amortization	$ 737,954	$ 644,520	$ 557,093
Operating Segments [Member] | JBI [Member]
Depreciation and amortization	256,000	226,000	198,000
Operating Segments [Member] | DCS [Member]
Depreciation and amortization	327,000	280,000	244,000
Operating Segments [Member] | FMS [Member]
Depreciation and amortization	48,000	44,000	35,000
Operating Segments [Member] | JBT [Member]
Depreciation and amortization	44,000	35,000	25,000
Segment Reconciling Items [Member]
Depreciation and amortization	$ 63,000	$ 60,000	$ 55,000