Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues
Revenue	$ 278,763	$ 266,851
Operating expenses:
Salaries, wages, and related expenses	100,335	99,159
Fuel expense	30,952	34,091
Operations and maintenance	13,596	17,109
Revenue equipment rentals and purchased transportation	66,751	63,016
Operating taxes and licenses	3,361	3,463
Insurance and claims	15,390	12,693
Communications and utilities	1,403	1,284
General supplies and expenses	20,830	13,620
Depreciation and amortization	21,108	14,575
Loss (gain) on disposition of property and equipment, net	702	(9,791)
Total operating expenses	274,428	249,219
Operating income	4,335	17,632
Interest expense, net	3,338	769
Income from equity method investment	(3,676)	(5,943)
Income before income taxes	4,673	22,806
Income tax expense	849	6,321
Income from continuing operations, net of tax	3,824	16,485
Income from discontinued operations, net of tax	150	150
Net income	$ 3,974	$ 16,635
Basic income per share(1):
Income from continuing operations (in dollars per share)	$ 0.29	$ 1.23
Income from discontinued operations (in dollars per share)	0.01	0.01
Net income per share (in dollars per share)	0.3	1.25
Diluted income per share:
Income from continuing operations (in dollars per share)	0.28	1.19
Income from discontinued operations (in dollars per share)	0.01	0.01
Net income per share (in dollars per share)	$ 0.29	$ 1.2
Basic weighted average shares outstanding (in shares)	13,087	13,361
Diluted weighted average shares outstanding (in shares)	13,800	13,877
Cargo and Freight [Member]
Revenues
Revenue	$ 247,685	$ 233,422
Fuel Surcharge [Member]
Revenues
Revenue	$ 31,078	$ 33,429