Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING REVENUE	$ 1,047,511	$ 1,207,458	$ 967,996
Operating Expenses
Salaries, wages and benefits	427,748	474,803	346,271
Rent and purchased transportation	80,056	112,749	54,288
Fuel	177,232	212,228	194,608
Operations and maintenance	70,793	63,358	39,092
Operating taxes and licenses	20,414	21,804	16,387
Insurance and claims	50,869	45,278	34,436
Communications and utilities	9,447	10,508	6,995
Depreciation and amortization	181,523	199,039	133,047
Other operating expenses	57,173	66,393	51,420
Gain on disposal of property and equipment	(7,508)	(41,087)	(96,906)
Total operating expenses	1,067,747	1,165,073	779,638
Operating income	(20,236)	42,385	188,358
Interest income	1,143	1,655	1,288
Interest expense	(17,582)	(24,187)	(8,555)
Income before income taxes	(36,675)	19,853	181,091
Federal and state income tax expense	(6,953)	5,078	47,507
Net Income	(29,722)	14,775	133,584
Other comprehensive income, net of tax	0	0	0
Comprehensive income	$ (29,722)	$ 14,775	$ 133,584
Net income per share
Basic	$ (0.38)	$ 0.19	$ 1.69
Diluted	$ (0.38)	$ 0.19	$ 1.69
Weighted average shares outstanding
Basic	78,733	79,010	78,941
Diluted	78,775	79,079	78,974
Dividends declared per share	$ 0.08	$ 0.08	$ 0.08