Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Revenues by Segment	$ 760,798	$ 811,096	$ 1,529,878	$ 1,643,810
Operating Income (Loss) by Segment	19,611	47,198	35,199	100,584
Depreciation and Amortization by Segment	72,672	74,898	146,942	149,211
Subtotal
Segment Reporting Information [Line Items]
Revenues by Segment	764,061	814,618	1,537,212	1,652,593
Other
Segment Reporting Information [Line Items]
Revenues by Segment	17,467	19,376	36,420	39,877
Operating Income (Loss) by Segment	(966)	(86)	(1,175)	463
Depreciation and Amortization by Segment	2,533	2,914	5,267	5,787
Corporate
Segment Reporting Information [Line Items]
Revenues by Segment	613	501	1,203	976
Operating Income (Loss) by Segment	(971)	(2,230)	(3,685)	(5,316)
Depreciation and Amortization by Segment	822	505	1,758	1,043
Inter-segment eliminations
Segment Reporting Information [Line Items]
Revenues by Segment	(3,263)	(3,522)	(7,334)	(8,783)
Truckload Transportation Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues by Segment	537,069	570,192	1,088,195	1,158,522
Operating Income (Loss) by Segment	20,998	45,159	41,838	96,145
Depreciation and Amortization by Segment	65,572	67,614	132,505	134,457
Werner Logistics | Operating Segments
Segment Reporting Information [Line Items]
Revenues by Segment	208,912	224,549	411,394	453,218
Operating Income (Loss) by Segment	550	4,355	(1,779)	9,292
Depreciation and Amortization by Segment	$ 3,745	$ 3,865	$ 7,412	$ 7,924