Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 3,400		$ 3,400		$ 1,600
Operating Revenue	196,547	$ 259,861	626,354	$ 804,935
Accessorial and other revenues	13,500	18,400	44,100	58,600
fuel surcharge [Member]
Disaggregation of Revenue [Line Items]
Fuel surcharge revenue	$ 24,100	$ 32,800	$ 75,000	$ 105,900