Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We have committed to property and equipment purchases of approximately $81.1 million at September 30, 2024. We are involved in certain claims and pending litigation, including those described herein, arising in the ordinary course of business. The majority of these claims relate to bodily injury, property damage, cargo and workers’ compensation incurred in the transportation of freight, as well as certain class action litigation related to personnel and employment matters. We accrue for the uninsured portion of contingent losses from these and other pending claims when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Based on the knowledge of the facts, management believes the resolution of claims and pending litigation, taking into account existing reserves, will not have a material adverse effect on our consolidated financial statements. Moreover, the results of complex legal proceedings are difficult to predict, and our view of these matters may change in the future as the litigation and related events unfold. On May 17, 2018, in Harris County District Court in Houston, Texas, a jury rendered an adverse verdict against the Company in a lawsuit arising from a December 30, 2014 accident between a Werner tractor-trailer and a passenger vehicle. On July 30, 2018, the court entered a final judgment against Werner for $92.0 million, including pre-judgment interest. The Company has premium-based liability insurance to cover the potential outcome from this jury verdict. Under the Company’s insurance policies in effect on the date of this accident, the Company’s maximum liability for this accident is $10.0 million (plus pre-judgment and post-judgment interest) with premium-based coverage that exceeds the jury verdict amount. As a result of this jury verdict, the Company had recorded a liability of $42.8 million as of September 30, 2024, and $39.8 million as of December 31, 2023. Under the terms of the Company’s insurance policies, the Company is the primary obligor of the verdict, and as such, the Company has also recorded a $79.2 million receivable from its third-party insurance providers in other non-current assets and a corresponding liability of the same amount in the long-term portion of insurance and claims accruals in the consolidated condensed balance sheets as of September 30, 2024 and December 31, 2023. The Company pursued an appeal of this verdict, and on May 18, 2023, the Texas Court of Appeals overruled Werner’s appeal and affirmed the trial court’s judgment. The Company has since filed a Petition for Review with the Texas Supreme Court, seeking further review of the Texas Court of Appeals decision. On August 30, 2024 the Texas Supreme Court granted the Company’s Petition for Review. Oral argument is scheduled for December 3, 2024. No assurances can be given regarding the outcome of the review. We are also involved in certain class action litigation in which the plaintiffs allege claims for failure to provide meal and rest breaks, unpaid wages, unauthorized deductions and other items. Based on the knowledge of the facts, management does not currently believe the outcome of these class actions is likely to have a material adverse effect on our financial position or results of operations. However, the final disposition of these matters and the impact of such final dispositions cannot be determined at this time.