Consolidated Condensed Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating revenue	$ 249,672	$ 298,023
Operating expenses (income):
Salaries, wages and benefits	88,762	98,516
Purchased transportation	41,814	54,103
Fuel and fuel taxes	39,561	46,796
Supplies and maintenance	16,070	15,987
Depreciation	28,527	29,530
Operating taxes and licenses	2,575	2,768
Insurance and claims	11,657	15,070
Communications and utilities	2,371	2,531
Gain on disposition of revenue equipment	(1,171)	(5,246)
Other	7,256	8,958
Total operating expenses	237,422	269,013
Operating income	(12,250)	(29,010)
Other	796	844
Income before income taxes	13,046	29,854
Income taxes expense	3,400	7,352
Net income	$ 9,646	$ 22,502
Basic earnings per common share (in dollars per share)	$ 0.12	$ 0.28
Diluted earnings per common share (in dollars per share)	0.12	0.28
Dividends declared per common share (in dollars per share)	$ 0.06	$ 0.06