Note 9 - Business Segments - Depreciation and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Depreciation and amortization	$ 182,996	$ 175,812
Operating Segments [Member] | JBI [Member]
Depreciation and amortization	60,400	61,700
Operating Segments [Member] | DCS [Member]
Depreciation and amortization	82,200	76,200
Operating Segments [Member] | ICS [Member]
Depreciation and amortization	3,300	1,300
Operating Segments [Member] | FMS [Member]
Depreciation and amortization	11,700	12,000
Operating Segments [Member] | JBT [Member]
Depreciation and amortization	9,100	10,800
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
Depreciation and amortization	$ 16,300	$ 13,800