Note 13 - Segment Information - Revenues and Operating Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023	Dec. 31, 2022
Operating revenues		$ 12,087,204		$ 12,829,665	$ 14,813,999
Salaries, wages and employee benefits		3,232,440		3,257,484	3,373,063
Depreciation and amortization		761,141		737,954	644,520
General and administrative expenses, net of asset dispositions		306,355		274,564	215,361
Total operating expenses		11,256,000		11,837,000	13,482,000
Operating income	[1]	831,225		993,196	1,331,553
Operating Segments [Member] | JBI [Member]
Operating revenues		5,956,000		6,208,000	7,022,000
Rents, purchased transportation, and fuel		3,791,000		3,986,000	4,616,000
Salaries, wages and employee benefits		844,000		808,000	827,000
Depreciation and amortization		249,000		256,000	226,000
Operating supplies and expenses		244,000		228,000	205,000
Insurance and claims		106,000		100,000	101,000
General and administrative expenses, net of asset dispositions		260,000		230,000	218,000
Other segment items (2)	[2]	32,000		31,000	29,000
Total operating expenses		5,526,000		5,639,000	6,222,000
Operating income	[1]	430,000		569,000	800,000
Operating Segments [Member] | DCS [Member]
Operating revenues		3,396,000		3,543,000	3,524,000
Rents, purchased transportation, and fuel		451,000		538,000	660,000
Salaries, wages and employee benefits		1,528,000		1,552,000	1,527,000
Depreciation and amortization		330,000		327,000	280,000
Operating supplies and expenses		276,000		285,000	289,000
Insurance and claims		173,000		161,000	149,000
General and administrative expenses, net of asset dispositions		202,000		214,000	207,000
Other segment items (2)	[2]	60,000		61,000	51,000
Total operating expenses		3,020,000		3,138,000	3,163,000
Operating income	[1]	376,000		405,000	361,000
Operating Segments [Member] | ICS [Member]
Operating revenues		1,141,000		1,390,000	2,323,000
Rents, purchased transportation, and fuel		967,000		1,225,000	2,002,000
Salaries, wages and employee benefits		79,000		87,000	109,000
Depreciation and amortization		35,000		6,000	3,000
Operating supplies and expenses		8,000		8,000	7,000
Insurance and claims		21,000		30,000	42,000
General and administrative expenses, net of asset dispositions		86,000		77,000	102,000
Other segment items (2)	[2]	1,000		1,000	1,000
Total operating expenses		1,197,000		1,434,000	2,266,000
Operating income	[1]	(56,000)		(44,000)	57,000
Operating Segments [Member] | FMS [Member]
Operating revenues		910,000		918,000	1,042,000
Rents, purchased transportation, and fuel		330,000		319,000	397,000
Salaries, wages and employee benefits		310,000		325,000	372,000
Depreciation and amortization		46,000		48,000	44,000
Operating supplies and expenses		41,000		45,000	53,000
Insurance and claims		14,000		23,000	26,000
General and administrative expenses, net of asset dispositions		101,000		101,000	103,000
Other segment items (2)	[2]	8,000		10,000	10,000
Total operating expenses		850,000		871,000	1,005,000
Operating income	[1]	60,000		47,000	37,000
Operating Segments [Member] | JBT [Member]
Operating revenues		702,000		789,000	937,000
Rents, purchased transportation, and fuel		509,000		574,000	683,000
Salaries, wages and employee benefits		43,000		50,000	61,000
Depreciation and amortization		36,000		44,000	35,000
Operating supplies and expenses		27,000		31,000	26,000
Insurance and claims		20,000		23,000	19,000
General and administrative expenses, net of asset dispositions		44,000		48,000	33,000
Other segment items (2)	[2]	2,000		3,000	3,000
Total operating expenses		681,000		773,000	860,000
Operating income	[1]	21,000		16,000	77,000
Intersegment Eliminations [Member]
Operating revenues		(18,000)		(18,000)	(34,000)
Total operating expenses		(18,000)		(18,000)	(34,000)
Operating income		$ 0	[1]	$ 0	$ 0	[1]

[1] Refer to the Consolidated Statements of Earnings for the reconciliation of consolidated operating income to earnings before income taxes.

[2] Other segment items include communication, utilities, and operating taxes and licenses expense items.