Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Operating Revenue	$ 330,916	$ 151,275
Operating Expenses
Salaries, wages, and benefits	123,333	58,638
Rent and purchased transportation	33,144	748
Fuel	57,528	29,711
Operations and maintenance	15,026	5,079
Operating taxes and licenses	5,543	3,209
Insurance and claims	11,002	5,566
Communications and utilities	2,876	1,078
Depreciation and amortization	48,469	23,311
Other operating expenses	17,891	5,798
Gain on disposal of property and equipment	(6,786)	(4,258)
Total operating expenses	308,026	128,880
Operating income	22,890	22,395
Interest income	484	146
Interest Expense	(6,075)	0
Income before income taxes	17,299	22,541
Federal and state income taxes	4,687	5,766
Net Income	12,612	16,775
Other comprehensive income, net of tax	0	0
Comprehensive income	$ 12,612	$ 16,775
Net income per share
Basic	$ 0.16	$ 0.21
Diluted	$ 0.16	$ 0.21
Weighted average shares outstanding
Basic	78,987	78,929
Diluted	79,022	78,953
Dividends declared per share	$ 0.02	$ 0.02