REVENUE - Schedule of Disaggregation of Revenue by Revenue Source (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of revenue
Revenues	$ 3,030,258	$ 3,283,499	$ 3,289,978
Inter-segment eliminations
Disaggregation of revenue
Revenues	(14,429)	(17,690)	(5,218)
Truckload Transportation Services \| Reportable Operating Segments
Disaggregation of revenue
Revenues	2,138,293	2,310,810	2,428,686
Werner Logistics \| Reportable Operating Segments
Disaggregation of revenue
Revenues	831,337	910,433	793,492
Transportation services
Disaggregation of revenue
Revenues	2,955,201	3,203,553	3,216,960
Other revenues
Disaggregation of revenue
Revenues	$ 75,057	$ 79,946	$ 73,018

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details