Annual report pursuant to Section 13 and 15(d)

Operations and Summary of Significant Accounting Policies - Goodwill Roll Forward (Details)

v3.24.0.1
Operations and Summary of Significant Accounting Policies - Goodwill Roll Forward (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Goodwill [Roll Forward]    
Balance, beginning of period $ 257,987 $ 218,555
Acquisition 20,629 34,754
Acquisition adjustment 90 4,678
Balance, ending of period 278,706 257,987
Expedited Freight    
Goodwill [Roll Forward]    
Balance, beginning of period 121,091 121,091
Acquisition 20,629 0
Acquisition adjustment 0 0
Balance, ending of period 141,720 121,091
Intermodal    
Goodwill [Roll Forward]    
Balance, beginning of period 136,896 97,464
Acquisition 0 34,754
Acquisition adjustment 90 4,678
Balance, ending of period $ 136,986 $ 136,896