v3.26.1
Summary of Significant Accounting Policies - Schedule of Measure of Segment Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Revenues $ 956,494 $ 817,115 $ 1,762,720 $ 1,604,690
Wages [1] 246,100 231,441 473,912 464,969
Salaries [1] 52,598 50,150 104,920 101,826
Purchased Transportation 84,980 57,699 149,308 117,548
Other Segment items [2] 381,429 315,007 713,457 628,675
Depreciation and amortization 64,181 62,546 126,371 121,589
Interest Expense 2,048 4,742 4,622 9,027
Interest Income (317) (34) (380) (73)
Income Tax Expense 31,215 24,173 46,381 39,928
Segment and Consolidated Net Income $ 94,260 $ 71,391 $ 144,129 $ 121,201
[1] Wages includes payroll costs for non-management employees generally paid on an hourly or per-mile basis. Salaries includes payroll costs for exempt employees.
[2] Other segment items include employees' benefits, fuel, operating expenses and supplies, operating taxes and licenses and claims and insurance.