Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 1,300		$ 1,300		$ 1,900
Operating Revenue	179,504	$ 196,547	539,887	$ 626,354
Accessorial and other revenues	13,400	13,500	44,100	44,100
fuel surcharge [Member]
Disaggregation of Revenue [Line Items]
Fuel surcharge revenue	$ 32,700	$ 24,100	$ 86,900	$ 75,000