Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
OPERATING REVENUES:
Operating revenues		$ 182,592	$ 221,724
OPERATING EXPENSES AND COSTS:
Salaries, wages and benefits		44,063	48,278
Operating supplies and expenses		34,712	41,073
Rent and purchased transportation		73,279	87,096
Depreciation		18,935	16,497
Insurance and claims		4,861	15,435
Other		7,179	5,423
Loss (Gain) on sale or disposition of equipment		240	(577)
Total operating expenses and costs		183,269	213,225
OPERATING INCOME		(677)	8,499
NON-OPERATING INCOME		3,938	899
INTEREST EXPENSE		(2,883)	(2,356)
INCOME BEFORE INCOME TAXES		378	7,042
FEDERAL AND STATE INCOME TAX EXPENSE (BENEFIT):
Current		105	2,371
Deferred		(8)	(560)
Total federal and state income tax expense		97	1,811
Net income		$ 281	$ 5,231
INCOME PER COMMON SHARE:
Basic (in dollars per share)		$ 0.01	$ 0.24
Diluted (in dollars per share)		$ 0.01	$ 0.23
AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	[1]	22,031	22,148
Diluted (in shares)	[1]	22,127	22,317
Freight Transportation Service [Member]
OPERATING REVENUES:
Operating revenues		$ 160,969	$ 193,454
Fuel Surcharge [Member]
OPERATING REVENUES:
Operating revenues		$ 21,623	$ 28,270

[1] As adjusted for the Company’s 2-for-1 forward stock splits paid in August 2021 and March 2022, respectively.