XML 38 R28.htm IDEA: XBRL DOCUMENT v3.21.2
Revenue from Contracts with Customers - Summary of Disaggregated Revenue by Business Line (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disaggregation of Revenue [Line Items]        
Revenue $ 1,075,107 $ 924,812 $ 2,975,980 $ 2,542,914
Intermodal [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 633,427 543,464 1,689,617 1,468,624
Logistics [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 224,136 192,187 663,620 569,682
Truck brokerage [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 153,270 119,994 420,523 304,686
Dedicated [Member]        
Disaggregation of Revenue [Line Items]        
Revenue $ 64,274 $ 69,167 $ 202,220 $ 199,922