Information by Segment, Geography, and Customer Concentration (Segment Descriptions) (Details) |
12 Months Ended |
---|---|
Dec. 31, 2019
Segment
| |
Segment Reporting Information [Line Items] | |
Number of Reportable Segments | 3 |
Trucking [Member] | |
Segment Reporting Information [Line Items] | |
Segment Reporting Information, Description of Products and Services | The Trucking segment is comprised of irregular route and dedicated, refrigerated, expedited, flatbed, and cross-border operations. Abilene's trucking operations are also included after the March 16, 2018 acquisition date. |
Logistics [Member] | |
Segment Reporting Information [Line Items] | |
Segment Reporting Information, Description of Products and Services | The Logistics segment is primarily comprised of brokerage and other freight management services. Abilene's logistics operations are also included after the March 16, 2018 acquisition date. |
Intermodal [Member] | |
Segment Reporting Information [Line Items] | |
Segment Reporting Information, Description of Products and Services | The Intermodal segment includes revenue generated by moving freight over the rail in the Company's containers and other trailing equipment, combined with the Company's revenue for drayage to transport loads between the railheads and customer locations. |
Corporate, Non-Segment [Member] | |
Segment Reporting Information [Line Items] | |
Segment Reporting, Description of All Other Segments | The non-reportable segments include support services provided to the Company's customers and independent contractors (including repair and maintenance shop services, equipment leasing, warranty services, and insurance), trailer parts manufacturing, certain driving academy activities, as well as certain corporate expenses (such as legal settlements and accruals and amortization of intangibles related to the 2017 Merger and certain acquisitions). |