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Summary of Revenue by Segment and Business Line (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Segment Reporting Information [Line Items]    
Revenue $ 805,859 $ 835,941
Intermodal [Member]    
Segment Reporting Information [Line Items]    
Revenue 508,223 511,235
Truck brokerage [Member]    
Segment Reporting Information [Line Items]    
Revenue 148,732 163,478
Logistics [Member]    
Segment Reporting Information [Line Items]    
Revenue 148,904 161,228
Operating Segments [Member] | Hub [Member]    
Segment Reporting Information [Line Items]    
Revenue 615,227 643,443
Operating Segments [Member] | Hub [Member] | Intermodal [Member]    
Segment Reporting Information [Line Items]    
Revenue 413,806 420,952
Operating Segments [Member] | Hub [Member] | Truck brokerage [Member]    
Segment Reporting Information [Line Items]    
Revenue 81,410 89,291
Operating Segments [Member] | Hub [Member] | Logistics [Member]    
Segment Reporting Information [Line Items]    
Revenue 120,011 133,200
Operating Segments [Member] | Mode LLC [Member]    
Segment Reporting Information [Line Items]    
Revenue 208,832 213,522
Operating Segments [Member] | Mode LLC [Member] | Intermodal [Member]    
Segment Reporting Information [Line Items]    
Revenue 112,366 110,692
Operating Segments [Member] | Mode LLC [Member] | Truck brokerage [Member]    
Segment Reporting Information [Line Items]    
Revenue 67,349 74,352
Operating Segments [Member] | Mode LLC [Member] | Logistics [Member]    
Segment Reporting Information [Line Items]    
Revenue 29,117 28,478
Intersegment Elims [Member]    
Segment Reporting Information [Line Items]    
Revenue (18,200) (21,024)
Intersegment Elims [Member] | Intermodal [Member]    
Segment Reporting Information [Line Items]    
Revenue (17,949) (20,409)
Intersegment Elims [Member] | Truck brokerage [Member]    
Segment Reporting Information [Line Items]    
Revenue (27) (165)
Intersegment Elims [Member] | Logistics [Member]    
Segment Reporting Information [Line Items]    
Revenue $ (224) $ (450)