Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Contract with Customer, Asset, Net [Abstract]
Contract with Customer, Asset, Net	$ 1,600	$ 1,900
Operating Revenues	1,047,500	1,207,500	$ 968,000
Fuel surcharge revenue	133,900	173,800	169,200
Accessorial, brokerage and other revenues	78,000	94,800	$ 50,700
Deposit Contracts, Liabilities	0	$ 0
Foreign Revenue - Mexico	31,800
Foreign Assets - Mexico	$ 1,000