Description of Business and Summary of Accounting Policies - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 2,144,528	$ 1,901,244
Land [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	159,309	116,187
Structures [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	521,578	440,015
Tractors [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	601,599	583,711
Trailers [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	490,248	426,000
Other Revenue Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	104,153	96,912
Technology Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	161,791	141,735
Other [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 105,850	$ 96,684