Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 2,400		$ 2,400		$ 2,600
Operating Revenue	306,169	$ 187,821	637,085	$ 339,097
Accessorial and other revenues	24,700	4,300	49,300	7,500
fuel surcharge [Member]
Disaggregation of Revenue [Line Items]
Fuel surcharge revenue	$ 41,500	$ 36,400	$ 91,100	$ 60,300