Note 13 - Acquisition of Lew Thompson & Son Trucking, Inc - Summary of Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Apr. 26, 2023
Goodwill	$ 80,303	$ 75,747
Lew Thompson & Son Trucking, Inc. [Member]
Accounts receivable			$ 5,100
Driver advances and other receivables			98
Inventory and supplies			1,015
Prepaid expenses			561
Net property and equipment			42,277
Other assets, net			120
Other intangibles, net			52,870
Total identifiable assets acquired			102,041
Accounts payable			(565)
Accrued expenses			(1,465)
Current portion of operating lease obligations			(396)
Current portion of insurance and claims accrual			(56)
Long-term portion of operating lease obligations			(2,103)
Total liabilities assumed			(4,585)
Net identifiable assets acquired			97,456
Goodwill	$ 17,000	$ 12,400	17,003
Net assets acquired			$ 114,459