Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Revenues by Segment	$ 745,701	$ 817,744	$ 2,275,579	$ 2,461,554
Operating Income (Loss) by Segment	17,595	37,900	52,794	138,484
Depreciation and Amortization by Segment	71,584	74,586	218,526	223,797
Subtotal
Segment Reporting Information [Line Items]
Revenues by Segment	748,949	822,146	2,286,161	2,474,739
Other
Segment Reporting Information [Line Items]
Revenues by Segment	18,698	19,212	55,118	59,089
Operating Income (Loss) by Segment	(980)	(150)	(2,155)	313
Depreciation and Amortization by Segment	2,541	2,946	7,808	8,733
Corporate
Segment Reporting Information [Line Items]
Revenues by Segment	674	487	1,877	1,463
Operating Income (Loss) by Segment	(2,687)	(2,808)	(6,372)	(8,124)
Depreciation and Amortization by Segment	829	139	2,587	1,182
Inter-segment eliminations
Segment Reporting Information [Line Items]
Revenues by Segment	(3,248)	(4,402)	(10,582)	(13,185)
Truckload Transportation Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues by Segment	522,803	572,195	1,610,998	1,730,717
Operating Income (Loss) by Segment	21,607	38,846	63,445	134,991
Depreciation and Amortization by Segment	64,352	67,819	196,857	202,276
Werner Logistics | Operating Segments
Segment Reporting Information [Line Items]
Revenues by Segment	206,774	230,252	618,168	683,470
Operating Income (Loss) by Segment	(345)	2,012	(2,124)	11,304
Depreciation and Amortization by Segment	$ 3,862	$ 3,682	$ 11,274	$ 11,606