Note 13 - Segment Information - Revenues and Operating Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating revenues		$ 11,999,096	$ 12,087,204	$ 12,829,665
Salaries, wages and employee benefits		3,236,319	3,232,440	3,257,484
Depreciation and amortization		714,785	761,141	737,954
Operating supplies and expenses		511,639	495,375	509,354
Insurance and claims		334,689	313,664	315,678
General and administrative expenses, net of asset dispositions		281,508	306,355	274,564
Total operating expenses		11,134,000	11,256,000	11,837,000
Operating income	[1]	865,069	831,225	993,196
Operating Segments [Member] | JBI [Member]
Operating revenues		5,975,000	5,956,000	6,208,000
Rents, purchased transportation, and fuel		3,716,000	3,791,000	3,986,000
Salaries, wages and employee benefits		877,000	844,000	808,000
Depreciation and amortization		247,000	249,000	256,000
Operating supplies and expenses		259,000	244,000	228,000
Insurance and claims		115,000	106,000	100,000
General and administrative expenses, net of asset dispositions		278,000	260,000	230,000
Other segment items (2)	[2]	33,000	32,000	31,000
Total operating expenses		5,525,000	5,526,000	5,639,000
Operating income	[1]	450,000	430,000	569,000
Operating Segments [Member] | DCS [Member]
Operating revenues		3,376,000	3,396,000	3,543,000
Rents, purchased transportation, and fuel		430,000	451,000	538,000
Salaries, wages and employee benefits		1,531,000	1,528,000	1,552,000
Depreciation and amortization		317,000	330,000	327,000
Operating supplies and expenses		283,000	276,000	285,000
Insurance and claims		174,000	173,000	161,000
General and administrative expenses, net of asset dispositions		205,000	202,000	214,000
Other segment items (2)	[2]	59,000	60,000	61,000
Total operating expenses		2,999,000	3,020,000	3,138,000
Operating income	[1]	377,000	376,000	405,000
Operating Segments [Member] | ICS [Member]
Operating revenues		1,109,000	1,141,000	1,390,000
Rents, purchased transportation, and fuel		958,000	967,000	1,225,000
Salaries, wages and employee benefits		67,000	79,000	87,000
Depreciation and amortization		8,000	35,000	6,000
Operating supplies and expenses		7,000	8,000	8,000
Insurance and claims		16,000	21,000	30,000
General and administrative expenses, net of asset dispositions		62,000	86,000	77,000
Other segment items (2)	[2]	1,000	1,000	1,000
Total operating expenses		1,119,000	1,197,000	1,434,000
Operating income	[1]	(10,000)	(56,000)	(44,000)
Operating Segments [Member] | FMS [Member]
Operating revenues		824,000	910,000	918,000
Rents, purchased transportation, and fuel		306,000	330,000	319,000
Salaries, wages and employee benefits		286,000	310,000	325,000
Depreciation and amortization		45,000	46,000	48,000
Operating supplies and expenses		38,000	41,000	45,000
Insurance and claims		23,000	14,000	23,000
General and administrative expenses, net of asset dispositions		92,000	101,000	101,000
Other segment items (2)	[2]	7,000	8,000	10,000
Total operating expenses		797,000	850,000	871,000
Operating income	[1]	27,000	60,000	47,000
Operating Segments [Member] | JBT [Member]
Operating revenues		734,000	702,000	789,000
Rents, purchased transportation, and fuel		547,000	509,000	574,000
Salaries, wages and employee benefits		41,000	43,000	50,000
Depreciation and amortization		26,000	36,000	44,000
Operating supplies and expenses		30,000	27,000	31,000
Insurance and claims		25,000	20,000	23,000
General and administrative expenses, net of asset dispositions		42,000	44,000	48,000
Other segment items (2)	[2]	2,000	2,000	3,000
Total operating expenses		713,000	681,000	773,000
Operating income	[1]	21,000	21,000	16,000
Intersegment Eliminations [Member]
Operating revenues		(19,000)	(18,000)	(18,000)
Total operating expenses		(19,000)	(18,000)	(18,000)
Operating income	[1]	$ 0	$ 0	$ 0

[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.