Revenue - Schedule of Disaggregation of Revenue by Revenue Source (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of revenue
Total revenues	$ 712,114	$ 769,080
Inter-segment eliminations
Disaggregation of revenue
Total revenues	(4,063)	(4,071)
Truckload Transportation Services | Reportable segment revenues
Disaggregation of revenue
Total revenues	501,875	551,126
Werner Logistics | Reportable segment revenues
Disaggregation of revenue
Total revenues	195,558	202,482
Transportation services
Disaggregation of revenue
Total revenues	693,370	749,537
Other revenues
Disaggregation of revenue
Total revenues	$ 18,744	$ 19,543